Introduction:
Summer holiday has long been associated with sleeping in. lazy yearss by the pool. hanging out with friends. larning the vocabulary of harmonic gesture. building bum experiments. and charting informations. Summer 2012 will be no exclusion. First. I want you to read 3 pages on the cyberspace ( Step 1 in “Procedure” below ) . Then. I want you to publish a worksheet from the cyberspace ( Step 2 ) . You are to use what you learned from reading by make fulling in the 29 boxes on the worksheet with as many correct replies as you can. Research on extra vocabulary may be required ( for case. what is an “independent variable” ? ) Next. I want you to use what you learned from reading by building a simple experiment where you will carefully enter measurings of length and clip. You will besides take a image of you with your experiment ( Step 19 ) You will so utilize your informations to build a graph ( Step 21 )

Last. you will reply inquiries about the consequences of your experiment. and put the pages of your completed study in the right order. Since this is a summer undertaking. you are to convey your completed study with you on the first twenty-four hours of school.

GRADING RUBRIC FOR THIS PROJECT: 100 points
a ) At least 5 of the 7 pages turned in on clip ( first category meeting ) :7 points B ) Report turned in complete ( all 7 pages at the same clip ) 7 points c ) Data in Table 1 and Table 2 are alone. complete. and correct30 points vitamin D ) The 12 inquiries on Page 1 and Page 2 are complete and correct:12 points vitamin E ) The Graph on Page 3 has a rubric. labeled axes. and is plotted correctly:8 points degree Fahrenheit ) The image on Page 4 meets the demands of Step 197 points g ) The replies on the worksheet ( Pages 5. 6. 7 ) are complete and correct29 points

Procedure:
1 ) Get down by reading 3 pages on the cyberspace that I have selected for you. In peculiar. pay attending to the significance of the undermentioned symbols – T. g. and cubic decimeter – and the definitions of the footings “acceleration of gravity” . “amplitude” . “length of a pendulum” . “period” . and “simple pendulum”

hypertext transfer protocol: //www. worsleyschool. net/science/files/pendulum/equation. hypertext markup language

hypertext transfer protocol: //dev. physicslab. org/Document. aspx? doctype=3 & A ; filename=OscillatoryMotion_BasicPendulum. xml

For this Wikipedia page. read 1. 6. 6. 1. and 6. 2 in the “Contents” : hypertext transfer protocol: //en. wikipedia. org/wiki/Pendulum 2 ) The nexus below takes you to a worksheet. At the top right is the “Printer Friendly Version” . chink at that place and so publish it. There are 29 boxes where replies should be recorded ; you should be able to calculate out most of the replies right ; wrong replies are – ? point. losing replies are -1 point. For me. this worksheet prints as 3 pages ; it is Pages 5. 6. and 7 of your undertaking.

hypertext transfer protocol: //dev. physicslab. org/Document. aspx? doctype=5 & A ; filename=OscillatoryMotion_PendulumLabReview. xml

3 ) Gather the 9 points listed in a-i as follows ( do every attempt to borrow what you don’t have alternatively of passing money ) : a ) about 10 pes of light twine ( thread. fishing line. dental floss. etc. ) B ) drawing pin or push-pin or tape with good adhesive. degree Celsius ) a few ounces of weight that can be tied/attached to the twine ( illustrations: auto keys. Christmas tree decoration. padlock. anything compact and dense ) . vitamin D ) tape step. vitamin E ) stop watch that measures clip to the nearest ten percent of a 2nd ( 0. 1 sec ) or hundredth of a 2nd ( 0. 01 sec ) ; about all cell phones have this as portion of a tool or app. degree Fahrenheit ) a chair or step-stool that is safe for you to stand on to touch a ceiling. g ) scissors. H ) camera ( cell phone OK. but image will hold to forwarded to someone’s email history so it can be printed ) . I ) graph paper ( or you can plot your ordered braces and publish your graph at hypertext transfer protocol: //nces. erectile dysfunction. gov/nceskids/graphing/classic/ . choice “line graph” ) 4 ) IMPORTANT: this is a simple experiment.

The outlook is that the exposure will demo YOUR experiment in YOUR house. and that your exposure and measurings will non be the same as another student’s. 5 ) Choose an indoor room where the ceiling is non peculiarly high. possibly about 8 pess from the floor ; a bathroom or sleeping room is frequently a good pick. 6 ) Construct a long pendulum ; it will fundamentally be like a child on a swing at the park ; here’s how: tie ( or otherwise secure ) the weight to one terminal of the twine. Let the weight bent about six inches above the land ; tack or tape the other terminal of the twine firmly to the ceiling. Often. twine is “twisted” as it is made. so the weight will whirl for a piece. Let the twine unwind. delay until your pendulum bents motionless. 7 ) Accurately measure the distance from the approximative centre of the weight straight up to the ceiling. Record this distance above Table 1 below ; if your tape step shows centimetres. enter the distance to the nearest whole or half centimetre. That is. if it looks close to 225 centimeter. seek to make up one’s mind if 224. 5. 225. 0. or 225. 5 centimeter is the best reading. If your tape step is in inches. enter the distance to the close one-fourth inch. That is. if it looks close to 7 pes 6 inches. seek to make up one’s mind if 89. 5. 89. 75. 90. 0. or 90. 25 is the best reading.

Time as a map of amplitude

8 ) Pull the weight sideways about 2 inches and let go of it ; notice that the weight swings back and Forth for at least one minute. Therefore. there is plentifulness of chance to get down a ticker and mensurate the clip needed to finish 10 back-and-forth swings. 9 ) Perform the clip measuring ; give the pendulum a little swing ( crabwise supplanting about 2 inches ) and ready the ticker. It is of import to number the swings right: when the weight is at the highest point. get down the ticker and state “zero” . When the weight returns to that same point. state “one” . etc. Stop the ticker when you find yourself numbering “10” . If you know you “botched” the measuring. clear the ticker and start over. 10 ) If you felt like the measuring was done good. enter the clip as “Time 1” in Table 1 precisely as it appears on the ticker. make non round or drop any figures. 11 ) Repeat the measure above four more times until Time 2 –Time 5 in Table 1 is complete.

The five times should be pretty consistent. within 0. 2 seconds of each other. If there is an obvious “outlier” . rub it and reiterate the measure supra once more to acquire a better value. Once you have five good. consistent values. cipher their norm and record it as “Average Time” . 12 ) Repeat Step 9. but this clip give the pendulum a medium swing ( crabwise supplanting of about 6 inches ) 13 ) Repeat Steps 10 and 11 ; the 2nd row of the informations tabular array should be complete. 14 ) Last. reiterate Stairss 9 through 11. but this clip give the pendulum a big swing ( crabwise supplanting of about 2 pess ) . 15 ) Use the consequences recorded in Table 1 to reply Questions 1 and 2.

Time as a map of length

16 ) Transfer the length and clip informations from the first row of Table 1 to the first row of Table 2. 17 ) Using the measurement tape to assist you. nip off the pendulum about 10 inches above the underside of the twine. Re-tie or re-attach the weight to do a shorter pendulum. Measure the length of this pendulum by reiterating Step 4 ; record the length in the 2nd row of Table 2. 18 ) In a well-designed experiment. merely 1 variable is changed at a clip. In this portion. length is traveling to be made increasingly shorter ; hence. the size of the swing must be kept the same. Using little swings ( approx. 2 inches of amplitude ) . repetition Stairss 9 through 11. Record the times in the 2nd row of Table 2. 19 ) This would be a good clip for the exposure. Make certain there is adequate visible radiation so that you. the weight attached to the twine. and some of the room is clearly seeable in the exposure. Print your exposure and do it Page 4 of your undertaking. 20 ) Complete Table 2 for the staying rows by reiterating stairss 17 and 18 above until Table 2 is full OR the pendulum is less than 30 centimeter ( 12 inches ) long.

21 ) Use Table 2 to build your Graph. For the first informations tabular array. handle the “Length” and “Average Time” Numberss as ordered braces to be plotted on a co-ordinate grid. As shown in the last row of Table 2. the Graph must hold ( 0. 0 ) for an beginning. Make “Average Time” the x-axis variable. and “Length” the y-axis variable. Label the ten and Y axes. Entitle the graph as follows: “Time for 10 swings as a map of pendulum length” .

A hapless graph will lose points ; I recommend doing it on a computing machine ( if you don’t cognize how. utilize the nexus in Step 3 ) ; nevertheless. if you choose to do it by manus on graph paper. make up one’s mind how to figure the grid so that the aforethought points fit ; nevertheless. I want the aforethought points to take up approximately half a sheet of paper ( that is. don’t make the graph excessively little ) .