question_answer

A solid sphere and a hollow sphere of equal mass and radius are placed over a rough horizontal surface after rotating it about its mass centre with same angular velocity \[{{\omega }_{0}}\] Once the pure rolling starts (let \[{{v}_{1}}\] and \[{{v}_{2}}\] be the linear speeds of their centre of masses), then

A) \[{{v}_{1}}={{v}_{2}}\]                     

B) \[{{v}_{1}}>{{v}_{2}}\]

C) \[{{v}_{1}}<{{v}_{2}}\]                     

D) None of these