Manu lifted a bag for a height of 20 m and Harry lifted the same for a height of 40 m- Which of the following statement is true for the work done by Manu and Harry-A- Manu did twice the amount of work than Harry-B- Both did the same amount of work-C- Harry did twice the amount of work than Manu-D- Manu did thrice the amount of work than Harry-

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Byju's Answer

Standard VI

Physics

Work Done

Manu lifted a...

Question

Manu lifted a bag for a height of 20 m and Harry lifted the same for a height of 40 m. Which of the following statement is true for the work done by Manu and Harry?

Manu did twice the amount of work than Harry.

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Harry did twice the amount of work than Manu.

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Both did the same amount of work.

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Manu did thrice the amount of work than Harry.

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Solution

The correct option is B Harry did twice the amount of work than Manu.
Harry lifted the bag for a height of 40 m which is twice the height that Manu carried. Since the weight of the bag is same in both the cases, work done is only dependent on displacement. Hence the work done by Harry is twice the amount of work done by Manu.

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