15. 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 g = 10 N kg-1.
Answers
Answered by
0
Answer:
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
Answered by
0
Answer:
The work done by each person is,
W=50kg×10m/s2×2m
=1000 J
Power is equal to work done per unit time
Power of first person will be,
=10sec1000J
=100W
Power of second person will be
=50sec1000J
=20W
Step-by-step explanation:
RADHE RADHE
Similar questions