1)A body of mass 1 kg is lifted through a height of 1m. Calculate work done? 2)A coolie lifts a box of 15 kg from the ground to a height of 2m. Calculate the work by the coolie on the box
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1)A body of mass 1 kg is lifted through a height of 1m. Calculate work done? 2)A coolie lifts a box of 15 kg from the ground to a height of 2m. Calculate the work by the coolie on the box
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W=mgh
W=1×9.8×1
W=9.8J
2)Given:m=15kg h=2m W=?
W=mgh
W=15×9.8×2
W=294J
Answer:
1)M = 1kg
h = 1m
w = ?
W = mgh
W = 1 × 9.8 × 1
W = 9.8 joule..
2) M = 15 kg
h = 2m
W = ?
w = mgh
w= 15 × 9.8 × 2
w = 294 joule
I hope it will help you