a man raises a box of mass 50 kg to a height of 2 metre in 20 second while another man raises the same box to the same height in 50 second compare: (1) the work done and (2) the power developed by them calculate: (1) the work done and (2) the power developed by each man
Take g = 10 N Kg
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A man raises a box of mass 50kg to the height of 2 metres in 20 seconds while another man Rise the same goes to the same height in 50 seconds compare the work then the power developed by the calculate the work done and the power developed by each man take ji is equals to 10 and kg minus power 1
Explanation:
Work done by first man = mgh
= 50 * 10 * 2
= 1000 J
Work done 2nd man = mgh
= 50 * 10 * 2
= 1000 J
Power developed by 1st man = Work / Time
= 1000 / 20
= 50 Watt
Power developed by 2nd man = Work / Time
= 1000 / 50
= 20 Watt
∴ Work done by both of them is same, but power developed by them is 50 Watt and 20 Watt respectively.
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