A boy lifts a 1 kg block by 1 m. The work done by the boy is:

0 J

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9.8 J

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1 J

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0.1 J

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Solution

The correct option is B 9.8 J

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Similar questions

A boy lifts a 1 kg block by 1 m. The work done by the boy is:(g = 9.8 metre per second squared)

A boy of mass m climbs up the stairs of vertical height h.

(a) What is the work done by the boy against the force of gravity?

(b) What would have been the work done if he uses a lift in climbing the same vertical height?

40 k g

50

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A boy of mass 40kg climbs up the stairs and reaches the roof at a height 8m in 5s.Calculate :

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