A child of mass `m` is standing, on the periphery of a circular platform of radius `R`, which can rotate about its central axis. The moment of inertia of the platform is `I`. Child jumps off from the platform with a velocity `u` tangentially relative to the platform. Find the angular speed of the platform after the child jumps off.

A person of mass m stands at the edge of a circular platform of radius R and moment of inertia. A platform is at rest initially. But the platform rotate when the person jumps off from the platform tangentially with velocity u with respect to platfrom. Determine the angular velocity of the platform.

A kid of mass M stands at the edge of a platform of radius R which can be freely rotated about its axis. The moment of inerti of the platform is I . The system is at rest when a friend throws as ball of mas mand the kid cathces it. If the velocity of the ball is v horiontally along the tangent to the edge of the platform when it was caught by the kid find the angular speed of the platform after the event.

Suppose a person of mass m stands at the edge of a circular platform of radius R and moment of inertia I . The platform is at rest initially, but the platform begins to rotate when the person begins to move with velocity v . Determine the angular velocity of the platform.

A man of mass m_1 is standing on a platform of mass m_2 kept on a smooth horizontal surface. The man starts moving on the platform with a velocity v_r relative to the platform. Find the recoil velocity of platform.

A person of 80 kg mass is standing on the rim of a circular platform of mass 200 kg rotating about its axis at 5 revolutions per minute (rpm). The person now starts moving towards the centre of the platform. What will be the rotational speed (in rpm) of the platform when the person reaches its centre___________.

A child is standing wiith hands at the centre of a platform rotating about its central axis. The kinetie energy of the system K. The chilid now seretches his arms so that of the kinetic energy of the system is now.

A uniform circular disc of radius R is rotating about its own axis with moment of inertia I at an angular velocity omega if a denser particle of mass m is gently attached to the rim of disc than its angular velocity is

A child with mass m is standing at the edge of a merry go round having moment of inertia I , radius R and initial angular velocity omega as shown in the figure. The child jumps off the edge of the merry go round with tangential velocity v with respect to the ground. The new angular velocity of the merry go round is