Question

A small block is shot into each of the four track as shown below. Each of the track rises to the same height. The speed with which the block enters the track is the same in all cases. At the highest point of the track, the normal reaction is maximum in

Answer 1

Correct option (a)

Explanation:

Normal reaction at the highest point of the path R = mv²/r - mg

For maximum R, value of the radius of curvature (r) should be minimum and it is minimum in first condition.