A ball of mass m is suspended by a thread of length l. With
what minimum velocity has the point of suspension to be shifted
in the horizontal direction for the ball to move along the circle about
that point? What will be the tension of the thread at the moment it
will be passing the horizontal position?
Was trying my hand at this Physics Puzzle! Got no idea how to start and where to start. Don't feel like this question has got anything to do with "Home work help".