First slide

Torque

Question

A grinding machine whose wheel has a radius of 1/π 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

Moderate

A

40W
B

4W
C

8W
D

10W

Solution

$P = τ ω = μ r F ω$ $= \frac{1}{π} \times 0.2 \times 40 \times 2 π \times 2.5$ =40W

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App