A skier of mass 50 kg stands at A at the top of sky jump. he takes off at A for his jump to B.calculate the change in his gravitational potential energy between A and B.
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Given, m = 50 kg, h = 75 m, h = 60 m
At point A, PE = mgh = 50 x 10 x 75 = 37500 J
At point B, PE mgh = 50 x 10 X 60 = 30000 J
Change in PE = PE, -PE, = 37500- 30000 = 7500 J
At point A, PE = mgh = 50 x 10 x 75 = 37500 J
At point B, PE mgh = 50 x 10 X 60 = 30000 J
Change in PE = PE, -PE, = 37500- 30000 = 7500 J
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g= 10 how
Value of acceleration due to gravity is 9.8 m/s2 or 10m/s²
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