Pathfinder Methods of Work and Energy MCQ 10

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Q.10.

A slider is released from a point P on a frictionless track, which bends into a circular loop at its bottom. Height of the point P above the ground is selected such that the slider is just capable of moving round inside the circular loop without breaking contact anywhere. The circular loop is now made elliptical without altering its height. The slider is now released from a point Q as shown in the figure. If the slider again rounds the complete elliptical loop, the minimum height of Q about the ground