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OpenStudy (anonymous):
I'm stuck again.. By how much does the gravitational potential energy of a 67 kg pole vaulter change if his center of mass rises about 3.0 m during the jump?
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OpenStudy (anonymous):
PE is the energy due to a body's position. It is given by the formul PE=mgh, where m is the mass in kg, g is gravity and h is gain/loss in height. Replacing values, you get PE as 67*9.81*3=?Joules.
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