A boy of mass 20 kg, moved up to the top of a building
of height 18 m, carrying a box of mass 2.5 kg. If he did
this in 1.5 min, what was his rate of doing work?
Answers
Answered by
1
Answer:
0
Explanation:
here the position of the boy is not changed he was put on the same place.....so here rate will be 0...
hope it's helpful
Answered by
0
Answer:
Answer-> 44.1 W
Explanation:
w =mgh
=gh (20+2.5)
=9.8×18×22.5
=3969 J
Rate of doing work = W/T
= 3969/(1.5×60)
=44.1 W
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