The work done on lifting a body of mass 20kg and specific gravity
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The answer is 200 Newton
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Answer:
1100 j
Explanation:
Given specific gravity `(rho_(b))/(rho_(w)) = 3.2`
`rho_(b) = 3.2 xx rho_(w) = 3.2 xx 1000 = 3200`
Workdone `W = mgh(1-(rho_(w))/(rho_(b))) = 20 xx 10 xx 8 (1-(1000)/(3200))`
`W = 20 xx 10 xx 8 ((2200)/(3200)) = 1100 J
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