A weightlifter lifted a load of 200 kgf to a height of 2.5 metre in 5 seconds calculate:1.the work done .2.the power developed by him .
take g =10 newton/kg
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Answer:
Explanation:
Work done = potential energy= mass × acceleration due to gravity× height
=200×2.5×10
=5000 J
Power = work done / time
= 5000j/5s
= 1000 W
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