Considering there is no friction , find the minimum angle #\alpha# for which the ball gets out of the hole.(answer: #\alpha=60# ; I want to know the full solution) (?)
Clearly here the
So at least both of them should be equal to allow the body move with uniform velocity.
So,considering torque acting on the body w.r.t the point of contact we get,
I.e alpha will be 60 degrees