Question
Physics Question on System of Particles & Rotational Motion
A particle undergoes uniform circular motion. About which point on the plane of the circle, will the angular momentum of the particle remain conserved ?
A
Centre of circle
B
On the circumference of the circle
C
Inside the circle
D
Outside the circle
Answer
Centre of circle
Explanation
Solution
In uniform circular motion the only force acting on the particle is centripetal ( towards centre). Torque o f this force about the centre is zero. Hence, angular momentum about centre remain conserved.