150325 If the earth suddenly contracts to \(\left(\frac{1}{3}\right)^{\text {rd }}\) of its present size without change in its mass, the ratio of kinetic energy of the earth after and before contraction will be (Earth is assumed to be a sphere)

150326 A body of mass \(m\) slides down a smooth inclined plane of inclination ' \(\theta\) ', and reaches the bottom with velocity ' \(V\) '. If the same body is a ring which rolls down the same inclined plane the linear velocity at the bottom of plane is

150327 If ' \(I\) ' is the moment of inertia and ' \(L\) ' is angular momentum of a rotating body, then \(\frac{L^{2}}{2 I}\) is its

150328 The moment of inertia of a ring about an axis passing through its centre and perpendicular to its plane is ' \(I\) '. It is rotating with angular velocity ' \(\omega\) '. Another identical ring is gently placed on it so that their centers coincide. If both the ring are rotating about the same axis, then loss in kinetic energy is

150325 If the earth suddenly contracts to \(\left(\frac{1}{3}\right)^{\text {rd }}\) of its present size without change in its mass, the ratio of kinetic energy of the earth after and before contraction will be (Earth is assumed to be a sphere)

150326 A body of mass \(m\) slides down a smooth inclined plane of inclination ' \(\theta\) ', and reaches the bottom with velocity ' \(V\) '. If the same body is a ring which rolls down the same inclined plane the linear velocity at the bottom of plane is

150327 If ' \(I\) ' is the moment of inertia and ' \(L\) ' is angular momentum of a rotating body, then \(\frac{L^{2}}{2 I}\) is its

150328 The moment of inertia of a ring about an axis passing through its centre and perpendicular to its plane is ' \(I\) '. It is rotating with angular velocity ' \(\omega\) '. Another identical ring is gently placed on it so that their centers coincide. If both the ring are rotating about the same axis, then loss in kinetic energy is

150325 If the earth suddenly contracts to \(\left(\frac{1}{3}\right)^{\text {rd }}\) of its present size without change in its mass, the ratio of kinetic energy of the earth after and before contraction will be (Earth is assumed to be a sphere)

150326 A body of mass \(m\) slides down a smooth inclined plane of inclination ' \(\theta\) ', and reaches the bottom with velocity ' \(V\) '. If the same body is a ring which rolls down the same inclined plane the linear velocity at the bottom of plane is

150327 If ' \(I\) ' is the moment of inertia and ' \(L\) ' is angular momentum of a rotating body, then \(\frac{L^{2}}{2 I}\) is its

150328 The moment of inertia of a ring about an axis passing through its centre and perpendicular to its plane is ' \(I\) '. It is rotating with angular velocity ' \(\omega\) '. Another identical ring is gently placed on it so that their centers coincide. If both the ring are rotating about the same axis, then loss in kinetic energy is

150325 If the earth suddenly contracts to \(\left(\frac{1}{3}\right)^{\text {rd }}\) of its present size without change in its mass, the ratio of kinetic energy of the earth after and before contraction will be (Earth is assumed to be a sphere)

150326 A body of mass \(m\) slides down a smooth inclined plane of inclination ' \(\theta\) ', and reaches the bottom with velocity ' \(V\) '. If the same body is a ring which rolls down the same inclined plane the linear velocity at the bottom of plane is

150327 If ' \(I\) ' is the moment of inertia and ' \(L\) ' is angular momentum of a rotating body, then \(\frac{L^{2}}{2 I}\) is its

150328 The moment of inertia of a ring about an axis passing through its centre and perpendicular to its plane is ' \(I\) '. It is rotating with angular velocity ' \(\omega\) '. Another identical ring is gently placed on it so that their centers coincide. If both the ring are rotating about the same axis, then loss in kinetic energy is