Question

A student makes ice cream using an old-fashioned hand-crank machine. He does 40 joules of work each time he turns the crank in a complete circle. The crank handle makes a circular path with a diameter of 0.5 meters. The student turns the crank at a rate of once every 1.6 seconds.

What is the average power the student’s body produces to operate the machine?

Answer 1

power=work/time=40J*1/1.6second
power=40/1.6 watts

Answer 2

thank you very much

Answer 3

fth