Questions  

The work done in lifting a body of mass 20kg and specific gravity 3.2 to a height of 8m in water is, (g = 10 ms–2)

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By Expert Faculty of Sri Chaitanya
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a
110 J
b
1600 J
c
500 J
d
1100 J
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detailed solution

Correct option is D

W=mgl1-1ρ=20×10×8×1-13.2

=20×10×82232=1100 J

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