If the angular velocity of a rotating rigid body is increased then its moment of inertia about that axis

A rigid body can rotate an axis with a constant angular velocity and angular momentum L . What is its moment of inertia about the axis?

A hollow sphere partly filled with water has moment of inertia I when it is rotating about its own axis at an angular velocity omega . If its angular velocity is doubled then its moment of inertia becomes

Calculate the angular momentum of a body whose rotational energy is 10 joule. If the angular momentum vector coincides with the axis of rotation and its moment of inertia about this axis is 8xx10^(-7) kg m^(2)

If no torque acts on a rotating body and if its moment of inertia decreases the angular velocity omega of the body increases such a manner that

(A) : Angular velocity of all the particles are same when a rigid body perform rotation. (R ) : The relation between angular velocity and linear velocity is v=w xx r where r is the radius of rotation about the axis.

A toruque tau produces an angular acceleration in a body rotating about an axis of rotation. The moment of inertia of the body is increased by 50% by redistributing the masses, about the axis of rotation. To maintain the same angular acceleration, the torque is changed to tau' . What is the relation between tau and tau' ?