Pushing An Object Essay, Research Paper
Pushing an object
When an object with mass is traveling, that it has kinetic energy is good known. Energy measure can be expressed in two parametric quantities of the mass and the velocity. Generally definition of energy is hard, though the measure can be measured easy.
Assume that ball & # 8216 ; A & # 8217 ; like billiards with mass & # 8216 ; M & # 8217 ; at velocity of & # 8216 ; V & # 8217 ; collides with centre of other standstill ball & # 8216 ; B & # 8217 ; as the same distinctive feature as ball & # 8216 ; A & # 8217 ; .
I express that ball & # 8216 ; A & # 8217 ; has Energy of Motion be in proportion to & # 8216 ; MV & # 8217 ; . Before hit, there has zero energy with ball & # 8216 ; B & # 8217 ; , we don & # 8217 ; t see like remainder energy, and disregard little loss energy like heat and influence of its rotary motion in this chapter. After hit, ball & # 8216 ; A & # 8217 ; becomes to be at remainder, and ball & # 8216 ; B & # 8217 ; is traveling at speed of & # 8216 ; V & # 8217 ; .
It can see that the energy of gesture with ball & # 8216 ; A & # 8217 ; transportation to ball & # 8216 ; B & # 8217 ; . Energy is movable like this. The whole of energy is the same as before and after This is an case which most basic and of import of being called jurisprudence of energy preservation. It is difficult to mensurate energy when forcing a wall being at remainder by stick, but we can cognize the energy measure by forcing a ball with the same force.
Making like this, even if straight operated energy measure is unknown, the energy can be known by mensurating the velocity of the object which energy is added to. Complex operated energy is exchangeable into simple instance.
By the way, we have been utilizing measure of speed with no peculiar consciousness, out of the blue it could non be easy to understand. Velocity is considered as comparative measure in natural philosophies. If we
suppose so, energy which is function of the velocity would be also relative quantity. By these thought, we will be confronted with a difficult problem right now. Suppose that look at a station from moving train at speed of ‘V’, the station (universe?) is moving to contrary direction at ‘V’. There must be existing enormous energy of motion which consists of the station mass and velocity of ‘V’. Could we extract this energy? There is not exist reality, it seem to fall often into unrealistic world under mathematical expression in physics. It is considered not to perform role of physics to express phenomenon to mathematical correctly. In existent physics, is there a way to express that train is moving, but station? How do we confirm it? Confirming it is not too difficult. Reducing train velocity to zero relative velocity between train and station, we can measure released energy quantity. We could confirm that the energy is proportion of train velocity ‘V’ and train mass. We could consider that train had been moving, but station by this measuring. However, observing from coordinates which moving with train as zero relative velocity, it must be a fact that moving is station, train is rest. Which is moving truly? A person who had tried to understand physics from basic probably become aware of the question that oldest unsolved spatial problem since Newton. Absolute space of Newton had been denied, velocity of object and motion have been considered as relative quantity in general physics. However you would probably find out that these thought is contradictory the experiment. If not exist non-relative velocity conception, we would become not to be able to express phenomenon to mathematical.
