365676 The moment of inertia of a ring about an axis passing through the 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 centres coincide. If both the rings are rotating about the same axis, then loss in kinetic energy is
365677
Assertion :
When a diver dives, the rotational kinetic energy of diver increases, during several somersaults.
Reason :
When diver pulls his limbs, the moment of inertia decreases and on account of conservation of angular momentum his angular speed increases.
365679 A merry-go-round, made of a ring-like platform of radius \(R\) and mass \(M\), is revolving with angular speed \(\omega\). A person of mass \(M\) is standing on its rim. At one instant, the person jumps off the round, radially away from the centre of the round (as seen from the round).The speed of the round afterward is
365676 The moment of inertia of a ring about an axis passing through the 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 centres coincide. If both the rings are rotating about the same axis, then loss in kinetic energy is
365677
Assertion :
When a diver dives, the rotational kinetic energy of diver increases, during several somersaults.
Reason :
When diver pulls his limbs, the moment of inertia decreases and on account of conservation of angular momentum his angular speed increases.
365679 A merry-go-round, made of a ring-like platform of radius \(R\) and mass \(M\), is revolving with angular speed \(\omega\). A person of mass \(M\) is standing on its rim. At one instant, the person jumps off the round, radially away from the centre of the round (as seen from the round).The speed of the round afterward is
365676 The moment of inertia of a ring about an axis passing through the 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 centres coincide. If both the rings are rotating about the same axis, then loss in kinetic energy is
365677
Assertion :
When a diver dives, the rotational kinetic energy of diver increases, during several somersaults.
Reason :
When diver pulls his limbs, the moment of inertia decreases and on account of conservation of angular momentum his angular speed increases.
365679 A merry-go-round, made of a ring-like platform of radius \(R\) and mass \(M\), is revolving with angular speed \(\omega\). A person of mass \(M\) is standing on its rim. At one instant, the person jumps off the round, radially away from the centre of the round (as seen from the round).The speed of the round afterward is
365676 The moment of inertia of a ring about an axis passing through the 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 centres coincide. If both the rings are rotating about the same axis, then loss in kinetic energy is
365677
Assertion :
When a diver dives, the rotational kinetic energy of diver increases, during several somersaults.
Reason :
When diver pulls his limbs, the moment of inertia decreases and on account of conservation of angular momentum his angular speed increases.
365679 A merry-go-round, made of a ring-like platform of radius \(R\) and mass \(M\), is revolving with angular speed \(\omega\). A person of mass \(M\) is standing on its rim. At one instant, the person jumps off the round, radially away from the centre of the round (as seen from the round).The speed of the round afterward is