Q. When a torque acting upon a system is zero, then which of the following will be constant
A) Force
B) Linear momentum
C) Angular momentum
D) Linear impulse
Explanation
(c) $\tau = \frac{dL}{dt}$, if $\tau = 0$ then $L =$ constant
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.