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A grinding machine whose wheel has a rad...

A grinding machine whose wheel has a radius of `1/pi` is rotating at 2.5 rev/sec. A tool to be shar-pened is held against the wheel with a force of 40N. If the coefficient of friction between the tool and wheel is 0.2, power required is

A

40W

B

4W

C

8W

D

10W

Text Solution

Verified by Experts

The correct Answer is:
A
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