WorkEnergy

# WorkEnergy - Work Energy EXPERIMENT 3 DOES W= KE Objective Our purpose in this lab was to examine the work-energy relationship Two experiments were

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Work – Energy

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EXPERIMENT 3: DOES W= KE Objective: Our purpose in this lab was to examine the work-energy relationship. Two experiments were conducted: The first experiment corroborates the claim that work is equal to the change in KE. Description: A glider floats frictionless on an air track with one end attached to four connected rubber bands with the last connected to a force sensor. The glider is then pulled back and released. The string is put through a smart pulley that measures the glider’s position. Theory: The new variable introduced by this experiment is that acceleration is no longer constant. The tension in the rubber bands is equal to the acceleration of the glider. The tension in the rubber bands lowers as the glider approaches the rubber bands until the point where the rubber bands are no longer taut, thus there is no tension. The rubber bands are responsible for the varying acceleration of the glider. Rubber bands have the most potential energy when they are stretched and the least when they are not stretched. Since the rubber bands are stretched in the beginning, their potential energy will be converted to kinetic energy through the acceleration of the glider. Our hypothesis is that the glider will accelerate most in the beginning of the experiment when the tension in the string created by the rubber bands is greatest. Conversely there will be a point towards the end of the motion of the glider where the acceleration will be zero for the rubber bands are no longer taut and thus no longer creating tension in the string between the glider and the rubber bands. At this point the glider would continue to move at a constant velocity. Work is the derivative of Force with respect to the x-axis or the area under the
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## This note was uploaded on 02/16/2010 for the course PHYSICS V85.0012 taught by Professor Atmar during the Spring '05 term at NYU.

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WorkEnergy - Work Energy EXPERIMENT 3 DOES W= KE Objective Our purpose in this lab was to examine the work-energy relationship Two experiments were

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