Question

The rod AB of length I and mass m can rotate freely about A in a vertical plane. A point mass m is
attached to the other end of the rod and the system is released from its horizontal position. The initial
angular acceleration is​

Answer 1

Answer:

ANSWER

(i)τ=Iα

So,

2

mgl

=

3

1

ml

2

(α)

⇒α=

2l

3g

(ii) Tangential acceleration of point A=g

But as angular velocity of point is zero so, angular acceleration will be zero.