Rotation Ques 3
- A particle moves in a circular path with decreasing speed. Choose the correct statement.
(2005)
(a) Angular momentum remains constant
(b) Acceleration (a) is towards the centre
(c) Particle moves in a spiral path with decreasing radius
(d) The direction of angular momentum remains constant
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Answer:
Correct Answer: 3.( d )
Solution:
- $\mathbf{L}=m(\mathbf{r} \times \mathbf{v})$
Direction of $(\mathbf{r} \times \mathbf{v})$, hence the direction of angular momentum remains the same.
BETA
