A non uniform cylinder of mass $m$ , length $l$ and radius $r$ is having its cetnre of mass at a distance $l/4$ from the centre and lying on the axis of the cylinder. The cylinder is kept in a liquid of uniform density $\rho $ . The moment of inertia of the rod about the centre of mass is $I$ . The angular acceleration of point $A$ relative to point $B$ just after the rod is released from the position shown in figure is
A non uniform cylinder of mass $m$ , length $l$ and radius $r$ is having its cetnre of mass at a distance $l/4$ from the centre and lying on the axis of the cylinder. The cylinder is kept in a liquid of uniform density $\rho $ . The moment of inertia of the rod about the centre of mass is $I$ . The angular acceleration of point $A$ relative to point $B$ just after the rod is released from the position shown in figure is
- A
$\frac{{\pi \rho g{l^2}{r^2}}}{I}$
- B
$\frac{{\pi \rho g{l^2}{r^2}}}{4I}$
- C
$\frac{{\pi \rho g{l^2}{r^2}}}{2I}$
- D
$\frac{{3\pi \rho g{l^2}{r^2}}}{4I}$
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