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A particle is made to move in circular p...

A particle is made to move in circular path with decreasing speed. Which of the following is correct ?

A

Angular momentum is constant

B

Only the direction of `vec L` is constant

C

Acceleration is always directed towards the centre

D

Particle moves in helical path.

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Angular momentum is an axial vector, so its direction is perpendicular to plane of motion which is not going to change because of change in speed. So only its direction remains same but its magnitude will vary.
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