A solid sphere is rolling without slipping on rough ground as shown in figure. If collides elastically with an identical another sphere at rest. There is nofriction between the two spheres . Radius of each sphere is R and mass is m. What is the net angular impulse imparted to second sphere by the external forces?

A solid sphere is rolling without slipping on rough ground as shown in

1.	A solid sphere is rolling without slipping on rough ground as shown in figure. If collides elastically with an identical another sphere at rest. There is nofriction between the two spheres . Radius of each sphere is R and mass is m. What is the net angular impulse imparted to second sphere by the external forces?
Answer» `(2)/(7)MRV` `(5)/(7)mRv` `(2)/(5)mRv` `(7)/(10)mRv` Answer :A