List of top Physics Questions on Rotational motion asked in AP EAPCET

A uniform rod of mass 20 kg and length 1.6 m is pivoted at its one end and can swing freely in the vertical plane. The angular acceleration of the rod just after the rod is released from rest in the horizontal position is:
A particle executes uniform circular motion with an angular momentum $L$. If its kinetic energy is doubled and the angular frequency is halved, then its angular momentum becomes:
A thin circular ring of mass $M$ and radius $R$ is rotating about its central axis with a constant angular velocity $\omega$. Two objects, each of mass $m$, are gently attached to the opposite ends of a diameter of the ring. The new angular velocity of the ring is: [H] [width=0.5\linewidth]{85.png}
A block of mass \(m\) is hanging by a rope tied to a rotating solid disc of mass \(M\) and radius \(R\) as shown in the figure. If \(\alpha\) is the angular acceleration of the disc, then the linear acceleration of the block is
Assertion (A): When a uniform metallic rod rotating about perpendicular bisector with constant angular speed is heated uniformly to raise its temperature slightly, its speed of rotation increases.
Reason (R): When a metal rod is heated uniformly to raise its temperature slightly, its moment of inertia increases.
A fan is rotating with an angular speed \(300\ \text{rpm}\). The fan is switched off, and it takes \(80\ \text{s}\) to come to rest. Assuming constant angular deceleration, the number of revolutions made by the fan before it comes to rest is:
The angular momentum of a wheel having a rotational inertia of \[ 0.2\,\text{kg m}^2 \] about its symmetric axis decreases from \[ 4 \text{ to } 2\,\text{kg m}^2\text{s}^{-1} \] in \(4\,\text{s}\). The average power of the wheel is:
A sphere rolls down from the top of an inclined plane which makes an angle \(30^\circ\) with the horizontal roof. If the highest and lowest points of the inclined plane are \(8.75\,\text{m}\) and \(3.75\,\text{m}\) respectively from the ground, then the horizontal distance from the lower edge of the roof at which the sphere hits the ground is \((g=10\,\text{m/s}^2)\):
A solid cylinder of radius \(R\) is at rest at a height \(h\) on an inclined plane. If it rolls down, then its velocity on reaching the ground is
Point masses 2 kg, 3 kg, 4 kg and 5 kg are lying at the points (-1,-1,0), (3,0,0), (0,0,1) and (0,4,0) respectively. The moment of inertia of this system about y-axis will be in kg m\(^{2}\).
A solid circular disc of mass 100 kg rolls along a horizontal floor so that center of mass has a speed of 0.2 m s\(^{-1}\). The absolute value of work done on the disc to stop it is.
A rod of mass M and length 2L lies horizontally. A particle of mass m, moving with velocity v in the vertical plane, strikes the end B of the rod and sticks to it. Then the velocity of point B just after collision is:

A circular disc of weight 500 N and radius 1 m is started from rest by a constant horizontal force of 25 N applied tangentially to the disc. The kinetic energy of the disc after \(t = 2\,s\) is:
A thin circular ring of mass M and radius R is rotating about its axis with a constant angular velocity \(\omega\). Two objects each of mass m are attached gently to the ring on either side. The ring now rotates with an angular velocity: