Question

a man rotates the wheel of an amusment slide in a fair. how muck work is done by him if he rotates the wheel 40 times in 1 minute

Answer 1

Hey mate ^_^

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Answer:
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Since the net displacement of wheel is zero, no work is done by the man.

#Be Brainly❤️

Answer 2

Given:

A man rotates his chair

Number of times A chair is rotated = 40

Time taken in 40 rotations = 1 Minute

Explanation:

f = 40/60 Hz = 2/3 Hz.

ω = 2πf = 4π/3

Let T be the torque applied by the man moving the chair.

Power delivered by the man is will be given by Tω

P = 4πT/3

Thus the man delivers 4πT/3 J of work per second

In 1 min he delivers =  60×4πT/3 = 80πT  Joule

Answer = 80πT  Joule