How much work is done when a hoist lifts a 290-kg rock to a height of 7 m?

Question

03-01-2018
Physics

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How much work is done when a hoist lifts a 290-kg rock to a height of 7 m?

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samuraijack samuraijack · Answer 1 · 2018-01-03T08:29:00+01:00

samuraijack samuraijack

03-01-2018

Given: Mass m = 290 Kg; Height h = 7 m

Required: Work = ?

Formula: Work = Force x distance but, Force F = mg

W= fd

W = mgh

W= (290 Kg)(9.8 m/s²)(7 m)

W = 19,894 Kg.m²/s²

W = 19,894 J

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