A man raises a box of mass 50 kg to a height of 2 m in 20 s, while ano

1.	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.
Answer» 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 $k g^{- 1}$ .

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.

Answer»

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 $k g^{- 1}$ .