A wheel ( to be considered as a ring ) of mass m and radius R rolls without sliding on a horizontal surface with constant velocity v. It encounters a step of height R/2 at which it ascends without sliding

A wheel ( to be considered as a ring ) of mass m and radius R rolls wi

1.	A wheel ( to be considered as a ring ) of mass m and radius R rolls without sliding on a horizontal surface with constant velocity v. It encounters a step of height R/2 at which it ascends without sliding
Answer» the angular velocity of the ring just after it comes in contact with step is 3v/4R the NORMAL REACTION DUE to the step on the wheel just after the impact is `(mg)/(2)-(9mv^(2))/(16R)` the normal reaction due to the step on the wheel increases as the wheel ascends. the FRICTION will be ABSENT during the ascent. Answer :A::B::C