ch13-p086 - 86 We apply the work-energy theorem to the...

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86. We apply the work-energy theorem to the object in question. It starts from a point at the surface of the Earth with zero initial speed and arrives at the center of the Earth with final speed v f . The corresponding increase in its kinetic energy, ½ mv f 2 , is equal to the work done on it by Earth’s gravity: ( ) Fdr Kr dr =− ³³ (using the notation of that Sample Problem referred to in the problem statement). Thus, 00 22 11 () f RR mv F dr Kr dr KR
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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