Conservation of Energy

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Physics 215 10/03/12 Experiment #5 Conservation of Energy Introduction The object of this particular experiment is to observe that energy is conserved in the gravitational field near the surface of the earth. James Joule is credited with discovering the Law of Conservation of Energy. Joule’s proved this law through his work in thermodynamics. He was able to show that “work can be converted as heat with a ratio of one to the other and work can be made into heat”, this according to “wikispaces”. Theory All physical processes that occur in the universe involve energy and the transfer of energy. The Law of Conservation of energy states that energy cannot be created or destroyed but only transferred from one place to another. So the purpose of this lab is to prove that this law truly does exist in the universe. We will attempt to prove this law is true by implementing an air track and air cart and letting gravity runs it course on the downhill runs, while on the uphill runs it will be propelled with the flick of a finger. Experimental Procedure In this experiment we used a frictionless airtrack with an aircart that had a .10 meter long tab attached to the top of it. The purpose of the tab was so that when the cart passed through the upper and lower photogates the carts velocity and time would be recorded. Both

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