First slide

Torque

Question

A constant torque acting on a uniform circular wheel changes its angular momentum from $A_{0} to$ $4 A_{0}$ in 4 seconds. The magnitude of this torque is-

Moderate

A

$3 A_{0} / 4$
B

$A_{0}$
C

$4 A_{0}$
D

$12 A_{0}$

Solution

$(A) ΔJ = 4 A_{0} - A_{0} = 3 A_{0} and ΔT = 4 ∴ τ = \frac{ΔJ}{ΔT} = \frac{3 A_{0}}{4}$

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