Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it. How much work is done by the men in lifting the box? $(g = 10 m s^{- 2})$

2000 J

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4000 J

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2500 J

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1500 J

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Solution

The correct option is C 2500 J
Given, mass m = $250 k g$ and height = $1 m$
We know,
Work done $= F . S$
$= (m \times g) \times 1$
$= 250 \times 10 \times 1$
$= 2500 J$

Suggest Corrections

Similar questions

(g = 10 m s^{- 2})

(g = 10 m s^{- 2})

In loading a truck, a man lifts boxes of 100 N each through a height of 1.5 m.

(a) How much work does he do in lifting one box ?

(b) How much energy is transferred when one box is lifted ?

5

1 m s^{- 1}

5 s

[g = 10 m s^{- 2}]

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