Rotation 2 Question 8
8. A particle undergoes uniform circular motion. About which point on the plane of the circle, will the angular momentum of the particle remain conserved?
(2003)
(a) Centre of circle
(b) On the circumference of the circle
(c) Inside the circle
(d) Outside the circle
Show Answer
Answer:
Correct Answer: 8. (a)
Solution:
- In uniform circular motion, the only force acting on the particle is centripetal ( towards centre). Torque of this force about the centre is zero. Hence, angular momentum about centre remain conserved.
