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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 sharpened is held against the wheel with a force of 40N. If the coefficient of friction between the tool and the wheel is 0.2, power required is

A

40 W

B

4 W

C

8 W

D

10 W

Text Solution

Verified by Experts

The correct Answer is:
A
`p = tau omega=fRomega=muFRomega`
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