[" A man stands at the centre of a turn table and "],[" Q."19" the turn table is rotating with certain angular "],[" velocity.If he walks towards rim of that turn "],[" table,"]

A man stands at the centre of turn table and the turn table is rotating with certain angular velocity. If he walks towards rim of the turn table, then

A child stands at the centre of turn table with his two arms out stretched. The turn table is set rotating with an angular speed of 40 rpm. How much is the angular speed of the child if he folds his hands back and thereby reduces his moment of inertia to 2/5 times the initial value? Assume that the turn table rotates without friction (ii) Show that the child's new kinetic energy of rotation is more than the initial kinetic energy of rotation. How do you account for this increase in kinetic energy?

A child stands at the centre of a turn table with his two arms outstretched. The turn table is set rotating with an angular speed of 40 rpm. How much is the angular speed of the child, if he folds his hands back reducing the moment of inertia to (2//5) time the initial value ? Assume that the turn table rotates without friction. (b) Show that the child's new K.E. of rotation is more than the initial K.E. of rotation. How do you account for this increase in K.E. ?

A child stands at the centre of a turn table with his two arms outstretched. The turn table is set rotating with an angular speed of 40 rpm. How much is the angular speed of the child, if he folds his hands back reducing the moment of inertia to (2//5) time the initial value ? Assume that the turn table rotates without friction. (b) Show that the child's new K.E. of rotation is more than the initial K.E. of rotation. How do you account for this increase in K.E. ?

Remya stands at the centre of a turn-table with her two arms outstretched. The table is set rotating with an angular speed of 40 revolutions per minute'. Write the expression for the rotational kinetic energy of the system and explain the terms

A preson is standing on the centre of a rotating table with his arms outstretched. The table is rotating freely with an angular his hands towards his chest. The moment of inertia reduces to (3)/(5) time the original moment of inertia. Calculate angular speed of the man when he withdraws his hands.