During testing

PHYSICS · Multi-part · CBSE · Physics · Work and Energy · Work and Energy

Problem

During testing, a battery-operated winch lifts a load and is found to do

1.2\times10^{5}\,\text{J}

of work in

4\,\text{min}

. (i) Determine the average power output of the winch in watts. (ii) Express the result obtained in part (i) in kilowatts. (iii) If

1\,\text{horsepower (hp)} = 746\,\text{W}

, calculate the approximate horsepower rating of the winch.