Question

Part 3 of this question please

Answer 1

Hey there!!!

(A)
mass = 500 kg
Distance = 80 m
Force = ma ⇒500×10 ⇒ 5000N
 now,
Work done = force × distance
∴ W = 5000×80
        = 400000J
        = 4×10^5

(B)

Power(P) = Work done (W) / Time taken (T)
                = 400000 / 10
                = 40000W
                = 40kW

(C)
The efficiency of pump is 40%
power rating is:
                P = F*d/(t*0.4)
                   = 5000*80/(10*0.4)
                   = 100,000 W
                   = 100kW

Hope it helps!!!