230_Physics ProblemsTechnical Physics

230_Physics ProblemsTechnical Physics - 232 P8.37 Potential...

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232 Potential Energy P8.37 (a) The object moved down distance 1 20 . m + x . Choose y = 0 at its lower point. KU U E K U U mgy kx xx x x ig is i fg fs f i +++ =++ + ++=++ += =− = ±− = ± mech 2 kg m s m N m Nm N J N N m N m N 320 N m 00 0 0 0 1 2 150 980 120 1 2 320 01 6 0 1 4 7 1 7 6 14 7 14 7 4 160 17 6 2160 14 7 107 2 2 2 2 .. . . . bg ej a f a f a f a f The negative root tells how high the object will rebound if it is instantly glued to the spring. We want x = 0381 m (b) From the same equation, 163 1 2 320 6 0 2 4 4 2 9 3 2 2 . kg m s m N m 2 a f The positive root is x = 0143 m . (c) The equation expressing the energy version of the nonisolated system model has one more
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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