A circular discof mass 4 kg and radius 1 m rolls on a smooth table with a uniform velocity of 0.5 ms^(-1). Calculate its (a) rotating K.E. (b) translational K.E.

A circular discof mass 4 kg and radius 1 m rolls on a smooth table wit

1.	A circular discof mass 4 kg and radius 1 m rolls on a smooth table with a uniform velocity of 0.5 ms^(-1). Calculate its (a) rotating K.E. (b) translational K.E.
Answer» Solution :ROTATIONAL K.E. `=(1//2)Iomega^(2) =(1//2) (1//2)mr^(2) xx (V^(2)//R^(2)) =(1//4) mv^(2) = 0.25 J` Trans. K.E. =`(1//2) mv^(2) = 0.5 J`