First slide

The two types of acceleration

Question

A particle moves in a circular path with decreasing speed. Which of the folowing is correct.

Easy

A

Angular momentum of the particle is constant
B

Only the direction of angular momentum is constant
C

The net acceleration of the particle is towards centre
D

It will move in a spiral path and finally reach the centre

Solution

It has a tangential deceleration so net acceleration changes but direction of angular velocity and angular momentum remain unchanged.

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