Streetcars And Ramps Essay, Research Paper
Skill Area P:
Planing experimental processs Introduction A streetcar is pushed to the top of a incline, the acme being
20cm from the land, and so is released. It rolls all the manner down the incline,
of 2 meters, before it collides with the wall at the underside. A twosome of keen
scientists thought it would be interesting to enter the clip taken for the
streetcar to make the underside and so cipher its mean velocity. They let the
streetcar fall down the incline two more times after that, merely to do their consequences
more accurate. They besides wanted to look into if the tallness of the acme made
any difference to the mean velocity, so they raised the incline to 30cm and pushed
the streetcar down the incline once more and recorded the time.Basically I have been asked to move as the two enthusiastic
experts and trial, as a primary aim, to see if the tallness of the acme
affects the mean velocity at which the streetcar travels down the incline. Based on my bing scientific cognition, I know that
this experiment depends on a certain type of energy being converted into
another type. When the streetcar is raised to the top of the incline, it additions a
certain sum of possible energy? this is converted into kinetic? ( motion ) energy as the streetcar moves down
the incline. Too see what factors may impact the manner the experiment turns out, it
may be utile to look at the expression for possible energy.P.E = mhg ( where
m=mass, h=height and g=gravity ) Obviously, the more possible energy the streetcar has got,
the faster it will travel down the incline. So, theoretically, the lone factors that
can impact this experiment are the tallness and the mass and the gravitation. Since
we can merely perchance carry on this experiment on Earth, the gravitation will ever
stay changeless? about 10m/s2 ( or 9.82m/s2 to be more precise ) .
The lone factors left are the variables I will be experimenting with in this
probe & # 183 ;
Primary Experiment? I will be look intoing, by
changing the tallness the acme of the incline is raised off the land, if the
mean velocity additions or lessenings. & # 183 ;
Secondary Experiment? I will be look intoing if the
mean velocity alterations by adding excess mass to the trolley.There will ever be smaller forces that could somewhat
impact the consequence, such as clash between the incline and the streetcar? s wheels,
and air opposition. There is no manner I can command any of these factors, but
they shouldn? T affect the consequences so much as to give wholly anomalous
readings for each experiment. Planing When be aftering my experiment, I will necessitate to take into
consideration the undermentioned points: & # 183 ;
Safety & # 183 ;
Fair proving & # 183 ;
Equipment & # 183 ;
How many consequences I will take & # 183 ;
What scope of variables I will experiment withSafety With this straightforward experiment there is non much
that needs to be taken into consideration. No harmful substances are being
used, neither are fires, dissolvers, atomic-reactors or insurance salesmen so
all-in-all a comparatively safe experiment. Obviously we will necessitate to take
safeguards when increasing the mass of the streetcar and do certain that all the
weights are firmly fixed to it by utilizing cellulose tape, threading etc. Particularly
when the streetcar reaches high velocities, the likeliness of weights falling off is
increased and this could be potentially harmful to an guiltless on-looker. Besides
at the underside of the incline some kind of barrier will necessitate to be placed to
prevent harm to the streetcar as it hurtles off the border, or to queer
possible injury to any unsuspicious pedestrian/small animate being. That? s fundamentally
it, the remainder is all common sense.Fair Testing As with all scientific experiments, merely one variable must
be altered at one clip. All the remainder must stay changeless to guarantee good
reasonable consequences. By utilizing present cognition, I know that the undermentioned factors
can impact the result and must be controlled: & # 183 ;
Height of incline? as this is included in the expression for
possible energy, the tallness of the incline should impact the velocity of the streetcar
in some manner. I will be modulating this variable in the primary experiment, but
it should be constrained to a individual tallness in the secondary experiment. & # 183 ;
Mass of streetcar? mass is besides included in the expression
for possible energy and so could impact the velocity of the streetcar one manner or
the other. As with tallness, this will be varied but merely in the 2nd
experiment. With the primary experiment we should restrain it merely by non
adding any weights to the streetcar and ever utilizing the same streetcar to roll up
each consequence. & # 183 ;
Gravity? the last part of the expression for possible
energy is gravitation, which will impact the result if it is increased or decreased.
The manner to keep this factor is to merely remain on the same planet. & # 183 ;
Clash? I mentioned that the lone factors that
should impact the result of the experiment would be mass, tallness and gravitation –
because they make up the expression for the possible energy. But other factors
may utilize some of this energy when it is being converted into kinetic ( motion )
energy as the streetcar moves down the incline. ?
The clash between the wheels of the streetcar and the surface of the
incline can? steal? some of the energy used to travel the streetcar and change over it to
heat alternatively. This can decelerate down the streetcar, but merely really somewhat. To
keep the same clash for all the consequences we should utilize the same stuff
for the surface of the incline, and the same stuff for the wheel of the
streetcar. No lubricating oil should be added to lubricate any equipment. & # 183 ;
Air opposition? there is really small we can make to
control this factor, and its effects would be so undistinguished it may non
affair. Basically, we merely need to do certain we have the same streetcar and we? ll
hold to mind we wear? t by chance attach a parachute to its back terminal. & # 183 ;
Water opposition? merely to indicate out the obvious, it
wouldn? T be recommended to carry on one experiment in air and one in
H2O & # 8230 ; H2O is far denser than air and will make a stronger atomic
? barrier? which will drastically decelerate down the streetcar. With these points in head it is indispensable that we must
maintain the same streetcar, use the same incline and maintain the mass invariable in the
primary experiment ; and the tallness invariable in the secondary experiment. We
will besides hold to maintain the length of the track the same, merely so the streetcar
has adequate clip to accelerate.Ranges and sums To do this probe successful, we must take a
reasonable scope, and sum, of readings to enter in order to come up with a
utile and enlightening result. For illustration, in the primary experiment it would
be pointless to experiment with highs runing from 1cm-2cm because the velocity
difference would be minor. Alternatively a more reasonable scope, allow? s say from
10cm-50cm, would be appropriate and should give some interesting consequences. We
could take readings every 10cm, and take a lower limit of three readings on each
tallness to work out an norm ( this makes the terminal consequence more accurate ) . For the secondary experiment, I chose to be working with
weight traveling up by 200g each clip. Five or six is ever a reasonable figure of
consequences to obtain, so I will travel up to about 1kg. Again, a lower limit of three
readings should be taken on each weight for a average norm to be taken. We may
demand to take consequences once more if a factor that should be kept changeless is
by chance changed, or if the streetcar is knocked for illustration. On the other
manus, it may be interesting to maintain these anomalous consequences so they can be explained
in the analysis. Below is a clear list of the scopes and sums in my two
experiments.Primary Experiment-three trials on each? ? ? ? ? ? 10cm ) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 20cm
) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 30cm
& gt ; Keeping weight constant? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 40cm
) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 50cm
) Secondary Experiment? three trials on each? 200g? ?
) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 400g? ? ) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 600g? ? & gt ; Keeping height constant? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 800g? ? ) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1000g
) Equipment Before we begin, we will necessitate a list of equipment for the
experiment to guarantee it all runs swimmingly: Trolley? To
turn over down the incline Ramp? For the
streetcar to turn over down Metre Stick? To
step out 2 meters on the incline Chalk? To tag
the start and finish lines Stop Watch? To
clip the streetcar Barrier ( bag ) ? To
halt the streetcar winging off the tabular array Books? For one
side of the incline to rest on, to increase the tallness of the ramp acme Data Collection
Sheet? To enter our consequences on Stationary? To
compose our consequences down withBelow is a diagram of how the equipment will be set up and
used. Using this equipment, we can easy obtain consequences with a
high grade of truth. The use of books means we can increase the tallness by
any sum because some books are thicker than others are. We can acquire the
tallness of the incline at the start line about precisely on the said measuring by
merely traveling the heap of books forwards or backwards fractionally. Possibly
manually clocking the streetcar with a stop-watch is non the most accurate manner of
entering the clip taken, but we may happen a better alternate when we come to
the practical. Why? From this experiment I expect to happen out what factors
impact the velocity of a organic structure when no manual force is applied to them ( i.e.
forcing them ) . This experiment is being conducted to turn out the potency and
kinetic energy expression which, one time completed, can be used to cipher precisely
the consequences of any state of affairs utilizing these theories. For illustration, the planning of
a rollercoaster? if we prove the expression, they can be applied to happen the
exact velocity of the train at the underside of a raised path ten meters in tallness. method I have decided to bring forth a bit-by-bit usher for each
experiment merely to guarantee that when we really come to carry oning the
practical work, it runs cleanly. This will besides assist us carry on fairer trials
as we will be following the same set of stairss each clip we collect a consequence. Primary Experiment 1. Set
out equipment as shown in the diagram 2. Ensure
the tallness at the start line ( the acme of the incline ) is 10cm utilizing the meter
stick 3. Ensure
there are no excess weights attached to the streetcar 4. Keep
the streetcar with its forepart touching the start line 5. Simultaneously
get down the halt clock and let go of the streetcar ( be careful non to force it or
exert any excess force on it ) 6. Stop
the clock when the forepart of the streetcar reaches the finish line 7. Record
the clip taken for the streetcar to make the coating, following to the relevant
tallness, in a table 8. Repeat
from measure 4 twice more so you end up with three consequences for the same tallness
so go on onto measure 9 9. Add
all these consequences together and split the reply by three to obtain the
mean. 10. Record this
norm in the tabular array 11. By puting more
books underneath the raised terminal of the incline, increase the tallness at the acme
by 10cm. Use the meter stick to look into 12. Repeat from measure 4
until you have obtained consequences for tallness from 10cm through to 50cmSecondary
Experiment 1. Set
out equipment as shown in the diagram 2. Ensure
the tallness at the start line ( the acme of the incline ) is 10cm utilizing the meter
stick 3. Add
200g of weights onto the streetcar and stick on them firmly with tape in the
center, so they do non interfere with the wheels. 4. Keep
the streetcar with its forepart touching the start line 5. Simultaneously
get down the halt clock and let go of the streetcar ( be careful non to force it or
exert any excess force on it ) 6. Stop
the clock when the forepart of the streetcar reaches the finish line 7. Record
the clip taken for the streetcar to make the coating, following to the relevant
weight, in a table 8. Repeat
from measure 4 twice more so you end up with three consequences for the same tallness
so go on onto measure 9 9. Add
all these consequences together and split the reply by three to obtain the
mean. 10. Record this
norm in the tabular array 11. Repeat from measure 3
until you have consequences for weights 200g through to 1kgBy following these guidelines precisely, and non making
anything excess, we should carry on a really just test.PredictionsPrimary Experiment As I mentioned in the Introduction, the experiment is
based on the possible energy at the top of the incline being converted into
kinetic energy at the underside. I? ve taken this theory from the beginning book? Physicss
For You? ( Keith Johnson ) on page 115 where it merely explains the fact in a
basic diagram of a frogman mounting to the top of a board. He uses 6000j to mount
the ladder so his possible energy at the top is 6000j. When he jumps off the
board and falls, his possible energy is proportionately converted into kinetic
energy. Halfway down, there is equal possible energy as kinetic ( 3000j each )
and at the underside all the possible energy has bee
n converted into kinetic
energy. Using this theory, we can state: Potential Energy ( at
the top ) = Kinetic Energy ( at the
underside ) Page 118 and 119 of the same book explains how to
calculate potency and kinetic energy: ? A weight lifter is raising a mass of 200kg, up to a
tallness of 2 meters. We have already seen how to cipher the possible energy
of his weights: ? ? ? ? ? ? ? ? ? ? ? Potential
energy? ? ? ? ? ? ? ? ? = ? ? ? ? ? ? ? ? ? work done? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? = ? ? ? ? ? ? ? ? ? weight ten height liftedBut here on Earth, weight ( in N ) = mass ten 10 so: Gravitational P.E = Mass g tallness ( Js ) ( kilogram ) ( N/kg ) ( m ) ( g has a different value on other planets ) ? The book besides tells me the expression for kinetic energy is: K.E = & # 189 ; ten mass ten
speed squared K.E = & # 189 ; mv2Knowing this we can compose: P.E = K.E mgh = & # 189 ; mv2 The expression can be
simplified 20h = v2 SQRT ( 20h ) = vThis expression will give us the mean speed for the
streetcar traveling down a incline of H meters high. Once we have found this we can
really utilize the equation for mean velocity to happen out how long it will take
the streetcar to make the finish line and really bring forth a theoretical consequence
prior to carry oning the experiment. Obviously, this won? T be necessary for a
simple anticipation, but it shows that the higher the incline is raised, the higher
the speed of the streetcar will be ensuing in a quicker clip to make the
finish line. I can besides foretell from this formuIa, the form of the graph V
against h. As H additions uniformly, by Lashkar-e-Taibas say 10cm each clip, V will
increase excessively? but non in proportion. This is due to the square root in the
expression that we have to utilize to happen v. ?
The higher the tallness goes, the less spread there will be between the
speed of the present and old highs. The graph will look something
like this: Therefore, I predict Increase in tallness
of incline = Increase in speed of streetcar Secondary
Experiment Again, for the secondary experiment, we merely need to
analyze the equation that states possible energy at he top equals the kinetic
energy at the bottom.P.E = K.E Mgh = K.E Now looking at the equations at this phase, it seems
reasonable to state that a larger mass will ensue in more kinetic energy, and
therefore a faster speed. But lets look at the expression for kinetic energy. Mgh = & # 189 ; mv2 Now we can see here that although a larger mass will
so consequence in a larger sum of possible, and hence kinetic, energy it
will non ensue in higher speed.
BOTH sides of the equation contain mass, which?
merely means they cancel each other out. Gh = & # 189 ; v2 Therefore I predict that there will be no important
alteration in speed when the weight of the streetcar is altered.Skill Area O:
Obtaining evidenceThis subdivision is chiefly seting our planning into action,
and hence is about all practical work so non much written work will be
produced.Primary Experiment When we came to carry on our experiment, we decided to
alter our program and make two experiments. One utilizing a stop-watch timer and one
utilizing a light gate to enter the speed of the streetcar for more accuracy.Manually clocking the experiment: Height
of track ( centimeter ) Time
taken to go 2m ( sec ) Speed
[ distance/time ] ( m/s ) Average velocity ( m/s ) 10cm 3.42 3.58 3.39 0.58 0.56 0.59 0.58 20cm 2.23 2.15 2.09 0.9 0.93 0.9 0.91 30cm 1.81 1.75 1.64 1.11 1.14 1.22 1.17 40cm 1.39 1.52 1.37 1.43 1.32 1.46 1.41 50cm 1.24 1.25 1.28 1.61 1.6 1.56 1.59 Using a light gate and computing machine package: Height of track ( centimeter ) Speed ( m/s ) Average velocity ( m/s ) 10cm 1.03 1.04 1.04 1.04 20cm 1.66 1.66 1.66 1.66 30cm 2.14 2.14 2.16 2.15 40cm 2.51 2.52 2.52 2.52 50cm 2.85 2.85 2.85 2.85 Secondary
Experiment As with the primary experiment, we used a light gate to
collect another set of results.Manually clocking the experiment: Added
weight ( g ) Time
taken to go 2m ( s ) Speed
[ distance/time ] ( m/s ) Average
velocity ( m/s ) 0 3.51 3.44 3.32 0.64 0.58 0.61 0.61 200 2.33 2.17 2.13 0.86 0.92 0.94 0.91 400 2.26 2.15 2 0.88 0.93 1 0.94 600 2 2.15 2.16 1 0.93 0.93 0.95 800 2.1 2.21 2.21 0.95 0.95 0.9 0.94 1000 2.07 2.08 2.34 0.97 0.96 0.86 0.93 1200 2.2 2.31 2.29 0.91 0.87 0.87 0.89 Using a light gate and computing machine package: Added
weights ( g ) Speed
( m/s ) Average
velocity ( m/s ) 0 1.62 1.66 1.5 1.6 200 1.65 1.57 1.63 1.62 400 1.64 1.6 1.65 1.63 600 1.66 1.61 1.67 1.65 800 1.67 1.68 1.68 1.68 1000 1.68 1.69 1.7 1.69 1200 1.69 1.69 1.71 1.7 We repeated ALL consequences three times, even when utilizing a light gate, to better the truth
of our experiment.Skill Area Angstrom:
Analyzing grounds and pulling conclusionsPrimary Experiment
The graph clearly shows the addition in velocity as the tallness of the incline
greatens, but non in a relative mode. The little curve suggests that
another force is moving on the streetcar and non allowing it to increase velocity
uniformly. Again, when utilizing the light gate, the consequences clearly show
that there is a definite addition in velocity as the tallness of the incline expands. The
curve is somewhat more outstanding, and the peak velocity reached in this portion of
the experiment is about dual of that in the last.Conclusion My anticipation was proved right as the graphs clearly
show that the velocity does so increase when the incline is raised higher. This
is due to the fact that more possible energy is given to the streetcar as it is
raised higher? tallness is portion of the expression that makes up P.E: P.E = mgh P.E = mass x gravitation x heightSo the higher an object goes, the more gravitative
possible energy it additions. When it falls, it? s possible energy is converted
into kinetic energy and ; since energy can neither be created or destroyed, merely
converted ; it will travel at a faster speed.The huge difference in the manual timing velocity and the
light gate velocity is likely due to reaction clip. The computing machine is able to
record the velocity far more accurately than we can.So, to sum up, as you lift an object to a tallness, the
chemical energy stored in you ( which comes from the nutrient you eat ) is converted
into gravitative possible energy. Obviously, the higher you lift the object,
the more energy you are utilizing and hence the more possible energy the
object is deriving. Potential energy is converted into kinetic energy wholly
so the object when released will travel at a faster rate depending on how high it
is lifted.Height does impact the velocity at which a
streetcar travels down a incline
The graph shows no form. The velocity stays approximately around the 0.9m/s grade
except for a suspected anomalousness at the beginning. The graph once more shows no important addition in velocity as
mass additions, but there is a little addition however. It is once more about
double the velocities recorded in the manual timing experiment.Conclusion The first graph shows a vacillant line, traveling up and so
down. This is expected from a manual timing experiment as consequences should change
depending on our reaction clip. There is an anomalous consequence with no weights
added? this was due to the fact that the streetcar hit the side when traveling
down the incline, losing a batch of its energy on clash and a spot on sound which
drastically slowed it down, as depicted in the graph. Other than this, the
consequences tend to remain around the same velocity. The 2nd graph does demo a small, but definite,
addition in velocity. This is caused by the lessening in clash as more wheels
are added. The excess force forcing down on the wheels made them less prone to
losing their energy on the surface of the incline? but this consequence is merely really
rebuff. If we were to carry on this experiment in a topographic point with no air opposition
and no clash, we would see that the velocity of the streetcar stayed absolutely
changeless as mass plays no portion in the equation of possible energy being
converted into kinetic.P.E = K.E Mgh = & # 189 ; mv2 Mass x gravitation x height = & # 189 ; ten mass ten
velocity2 Gravity x height = & # 189 ; ten velocity2Mass is cancelled out and theoretically has no impact on
the velocity of which an object travels when it is given gravitative potency
energy. Galileo proved this with his celebrated experiment- ? & # 8230 ; In the seventeenth Century, Galileo was the mastermind
who looked at this phenomenon with fresh eyes. Legend has it that he climbed to
the top of the tilting Tower of Pisa and dropped two cannon balls over the
side. One cannon ball was heavier than the other was. Galileo? s professor was
extremely doubting about Galileo? s thought and so Galileo had the professor prevarication at
the underside of the tower with his ear to the land! This was so that the
professor could listen out for the two thumps as one cannon ball hit the land
before the other 1. The professor was dismayed to merely hear one thump? they
had hit the land at the same clip! .. ? Take
from Bev Aldridge? s PGCE NotesYou may state a feather beads slower than a cannon ball, but
it merely flutters to the land because of air opposition. Air opposition Acts of the Apostless
on everything that moves through the air and is a force that opposes gesture,
i.e. it makes a traveling organic structure decelerate down. Some forms result in less air
opposition than others? a plume experiences much, and a coin really small.
Therefore when a coin and a plume are dropped from the same tallness in a vacuity,
they both hit the land at the same clip. This is an of import rule in scientific discipline. If air
opposition is the same for two objects that are dropped, they will derive velocity
at the same rate as each other even if one is much heavier than the other is.
So if they are dropped from the same tallness, they will hit the land at the
same clip as each other.This is expressed
scientifically by stating that acceleration due to gravitation on the Earth? s
surface is constant.Mass has no consequence
on the velocity at which a streetcar travels down a ramp.Skill Area Tocopherol:
Measuring EvidenceThe experiments went really good and ran expeditiously, thanks
to the program we had drawn out beforehand. So good, we even had clip to carry on
another set of experiments utilizing a light gate and a computing machine bundle. This
excess equipment made us certain that our consequences were accurate and could be
counted on. Thankss to the rapid velocity of visible radiation, this device is highly
sensitive and can mensurate velocity to a really all right grade. For our experiment, we
didn? T require it to be every bit accurate as the system allowed so we rounded the
consequences off to three important figures. With our 2nd set of consequences we
were certain they were dependable and could be counted on. Unfortunately, the
same couldn? T be said for the first set of experiments where we manually timed
the clip the streetcar took to go down the incline. Due to human mistake and
reaction clip, these consequences could non be relied on wholly, but did give us
a unsmooth thought. If we were to carry on the experiment once more, I would salvage clip by
merely bring forthing consequences utilizing the computing machine system with light gate. ? ? ? ? ? ? ? ? ? ? ? There was
one consequence that did non suit the form, and was excessively utmost to be our reaction
clip. This was the consequence for 0g on the manually timed weight experiment. It
was suspiciously lower than the others were, and we agreed that it was the fact
that the streetcar hit the side blowing its energy on clash. When we noticed the
streetcar had hit the side, we decided to take the consequence anyhow merely to turn out
the point. ? ? ? ? ? ? ? ? ? ? ? Thankfully,
we had arranged to roll up a reasonable sum of consequences, which gave us adequate
information to pull a decision from. I would non take to alter the sums
if I conducted the experiment once more because we managed to accomplish upper limit
result in the clip allotted. ? ? ? ? ? ? ? ? ? ? ? If I were
to make this experiment once more, I would experiment with different surfaces of
incline. I wasn? T anticipating the mass to hold any difference on the velocity but, even
with the light gate, consequences showed a little addition. I assume this was due to
clash and would wish to look into its belongingss. Besides I would utilize a
streetcar than travelled in a consecutive line! The chief job we found in our
experiment was that the streetcar kept rocking to the sides, making a longer
journey and most of the clip hitting the border. This wasted a batch of clip as we
had to carry on the consequence once more. This besides could hold been due to uneven floor,
so a spirit degree may come in ready to hand. ? ? ? ? ? ? ? ? ? ? ? To widen
this work, we could carry on Galileo type experiments, but take them a measure
farther. Possibly, if we had the entree to the right equipment, we could drop
weights from different highs in a vacuity ( i.e. no air opposition ) , calculate
the velocity utilizing light Gatess and see if it produces theoretically perfect
consequences. We could besides seek extinguishing any other opposing forces, such as
clash, by smoothing surfaces etc. and detecting if this changes the consequences. ? ? ? ? ? ? ? ? ? ? ? To take
the potential/kinetic energy component even further, we could look into elastic
possible energy and see if it works on the same rule as gravitative
possible energy. A simple experiment, such as drawing a streetcar back against
an elastic set and allowing travel to see how far it goes, or what speed it goes at
would be of involvement. And we could besides look into what parametric quantities consequence the
result, such as distance rubber band is pulled, weight of streetcar, type of surface
etc. ? ? ? ? ? ? ? ? ? ? ? All these
things would assist foster our advancement in this country of natural philosophies and assist our
apprehension of the subject.Bibliography PHYSICS FOR YOU? Keith Johnson WESTMINSTER COLLEGE RESOURCE PGCE NOTES? Bev Aldridge FORCES IN ACTION
