Question

A uniform rod of mass m length l is suspended by two strings at its ends as shown when one of the string is cut, the rod starts falling with an initial angular acceleration?

• A. $3g/2l$
• B. $2g/5l$
• C. $3g/4l$
• D. $7g/6l$

Answer 1

The correct option is A $3g/2l$

$mg-T=ma$

$mg\times L/2=Ia=m{l}^2/3\times a$

$\Rightarrow a=3g/2l$

Hence,

option $\left(A\right)$ is correct answer.