A small block of mass m slides along a smooth track, as shown in fig. (i) If it starts from
Channel: Doubtnut
Date: 2020-08-30

A small block of mass m slides along a smooth track, as shown in fig. (i) If it starts from rest at P, what is the resulting force acting on it at Q ? (ii) at what height above the bottom of the loop should the block be released so that the force it exerts against the track at the top of the loop equals its weight?