Paul and Peter are weightlifters. Paul lifts 100kg barbell over his head 10 times in 1 minutes; Peter lifts 100kg barbell over his head 10 times in 10 seconds. Who has more power? Give your reasons.
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The weight lifter lifts 100 kg of weight from the floor to a position over her head, 2.2 m above the ground.
When the mass is lifted to a height of 2.2 m above the ground it acquires a gravitational potential energy equal to m*g*h where m is the mass of the weights, g is the acceleration due to gravity and h is their height with respect to the ground.
Explanation:
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