calculate the work done by a boy in lifting a 10 kg laptop from the ground and keeping it on a shelf 1.5 m above the ground
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as we know
W.D=F×D
=m×g×1.5
=10×10×1.5
W.D=150J
W.D=F×D
=m×g×1.5
=10×10×1.5
W.D=150J
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