A man of mass 60 kg, carrying a load of mass 40 kg on his head, climbs up a 15 m long staircase to the top of a building 5 m high. What is the work done by the man?

A man of mass 60 kg, carrying a load of mass 40 kg on his head, climbs

1.	A man of mass 60 kg, carrying a load of mass 40 kg on his head, climbs up a 15 m long staircase to the top of a building 5 m high. What is the work done by the man?
Answer» 49 KJ 4 KJ 4.9 KJ None of these Solution :Work done, `W=(M+m)gh=(60+40)xx9.8xx5` =`4.9xx10^(3)`

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A man of mass 60 kg, carrying a load of mass 40 kg on his head, climbs up a 15 m long staircase to the top of a building 5 m high. What is the work done by the man?

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