Question

A 50 Kg man with 20 Kg load on his head climbs up 20 steps of 0.25m height each. The work done is climbing is

Answer 1

Hope this will help you..

Answer 2

We know that Work Done= Force x Displacement.

F= m x a (But there He is Against gravity) so,

F=m x g

F= ((50+20) x 10 )m/s^2

F=700 N

Displacement= (0.25 x 20 ) m

Displacement=5 m

Applying The formula of Work done,

work done = Force x Displacement

=>Work Done = (700 x 5) N.m

=>Work Done=3500 N.m (Or) 3500 J

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