Physics

Problem

A warehouse has two identical hoists that each lift a

200\,\text{kg}

pallet to a height of

8\,\text{m}

. Hoist A completes the lift in

20\,\text{s}

, while Hoist B takes

30\,\text{s}

. (i) Calculate the power developed by Hoist A. (ii) Calculate the power developed by Hoist B. (iii) Which hoist is more powerful and by what factor?