A solid sphere rolls down two different inclined planes of the same heights but different angles of inclination. In each case, the ball will reach the bottom :
Answer & explanation
Correct answer: option 2
Acceleration of the rolling sphere :
a = gsinθ/((1+k2/R2))
Velocity of the sphere at the bottom of the inclined plane :
v=√(2gh/((1+k2/R2)))
The sphere will reach the bottom with the same speed v because h is the same in both the cases.