A man raises a box of mass 50 kg to a height of 2 m in 20 s, while another man raises the same box to the same height in 50 s. (a) Compare : (i) the work done, and (ii) the power developed by them. (b) Calculate : (i) the work done, and (ii) the power developed by each man. Take 8 = 10 N kg-
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Explanation:
The work done by each person is,
W=50kg×10m/s
2*2m=1000 J
Power is equal to work done per unit time
Power of first person will be,
= 10sec/1000J
=100W
Power of second person will be
= 50sec/1000J
=20W
[ This is not my answer as I searched online but I hope that this little help was useful to you in any way possible Thanks. ]
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