5] Conservation of Energy

# 5] Conservation of Energy - graph we are able to see that...

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Huynh, Anne July 9, 2008 Partners: Vinh Dang, Ben Lee, Tania Gomez Conservation of Energy Purpose: The purpose of this lab was to study the conservation of mechanical energy for motion under gravity. The mathematical relationship that we used concerned the conservation of mechanical energy E for the motion of an object under gravity. Summary: Position Initial (t) 1 2 Bottom Total Energy 0.2707 0.271 0.272 0.268 % Difference 0 0.11 0.48 1 Here we have a summary of total energy for the four positions that we measured. The total energy at the location specified, as shown in the computation table, is derived from summing the potential energy and the kinetic energy. The potential energy was calculated by multiplying mass, gravity, and the net height. After we obtained the average velocity at each position, we calculated kinetic energy as 1/2 mv 2 and added the two energies together. By looking at the

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Unformatted text preview: graph we are able to see that as potential energy decreases, kinetic energy increases. The % difference as shown above demonstrates that the total energy was conserved at each position and supports our purpose. Experimental Errors: Some errors may have occurred with the glider, such as imbalance in the setup or inaccurate weighing on the electronic balance. Another factor is our measurements because the ruler can only be read to a certain degree of accuracy. The total energies are not exactly equal because there are other external forces besides gravity such as friction. Giving a slight push when letting go of the glider would affect time making the average higher. As listed above, our percent difference with the t position as the theory, yielded values all less than 1%....
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5] Conservation of Energy - graph we are able to see that...

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