One man takes 1 min to raise a box to a height of 1 metre and another man takes 1/2 min. to do so. The potential energy in the two cases is

different

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same

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energy of the first is more

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energy of the second is more

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Solution

The correct option is B same
$E n e r g y r e q u i r e d = m g h$
In both cases h is the same. Hence energy given by both is the same. It should be noted that powers are different because power is the rate of change of energy.

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One man takes 1 min to raise a box to a height of 1 metre and another man takes 1/2 min. to do so. The potential energy in the two cases is

The correct option is B sameEnergyrequired=mghIn both cases h is the same. Hence energy given by both is the same. It should be noted that powers are different because power is the rate of change of energy.

The correct option is B same
$E n e r g y r e q u i r e d = m g h$
In both cases h is the same. Hence energy given by both is the same. It should be noted that powers are different because power is the rate of change of energy.