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A particle falls freely near the surface...

A particle falls freely near the surface of the earth. Consider a fixed point `O` (not vertically below the particle) on the ground.

A

Angular momentum of the particle about `O` is increasing.

B

Torque of the gravitational force on the particle about `O` is decreasing.

C

The moment of inertia of the particle about `O` is decreasing.

D

The angular velocity of the particle about `O` is increasing.

Text Solution

Verified by Experts

The correct Answer is:
A, C, D

(A) Since velocity of particle is increasing so angular momentum of particle about `O` increases.
(B) Torque of gravitational field about `O` remain constant
(C ) Distance of particle from `O` decrease so moment of inertia `(I = mr^(2))` will decreases
`(D)` `L = I omega rArr omega = (L)/(I), L uarr` and `I darr` so `omega darr`.
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