Question

How much power is required to lift a body of mass 100kg to a height of 60 m in 1 minute? (g = 9.8 m/s²)
(A) 100 W
(B) 980 W
(C) 9.8 W
(D) 1980 W

Answer 1

Answer:

Hey mate plzz refer to the attachment

Answer 2

Answer:

(B) 980 W

Explanation:

Given,

mass of body,m = 100 kg

height, h = 60 m

and time taken, t = 1 min = 60 s

work done in raising the body up to height, h is given by

    W = m.g.h

=> W = 100 x 9.8 x 60 J

=>  W = 58800 J

Since, the power required is given by

P =$\dfrac{work\ done}{time\ taken}$

   =$\dfrac{58800}{60}$

   = 980 W

Hence, the power required to lift a body of mass 100 kg to a height 60 m in 1 min is 980 W.