One man takes $1$ minute to raise a box to a height of $1$ metre and another man takes $1 / 2$ minute to do so. The energy of the two 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 D Same
Energy required $= m g h$ . In both cases, $h$ is the same. Hence, the energy given by both is the same. [It is worth noting here that the powers of two men will be different as power is the energy expenses per unit time and times are different here].

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One man takes 1 minute to raise a box to a height of 1 metre and another man takes 1/2 minute to do so. The energy of the two is:

The correct option is D SameEnergy required =mgh. In both cases, h is the same. Hence, the energy given by both is the same. [It is worth noting here that the powers of two men will be different as power is the energy expenses per unit time and times are different here].

One man takes $1$ minute to raise a box to a height of $1$ metre and another man takes $1 / 2$ minute to do so. The energy of the two is:

The correct option is D Same
Energy required $= m g h$ . In both cases, $h$ is the same. Hence, the energy given by both is the same. [It is worth noting here that the powers of two men will be different as power is the energy expenses per unit time and times are different here].