The figure shows a smooth track, a part of which is a circle of radiur R. A block ofmas m is pushed against a spring of spring constant K fixed at the left end and is then released. Find the initial compression of the spring so that the block presses the track with a force mg when it reaches the point P, where the radius of the track is horizontal?

The figure shows a smooth track, a part of which is a circle of radiur

1.	The figure shows a smooth track, a part of which is a circle of radiur R. A block ofmas m is pushed against a spring of spring constant K fixed at the left end and is then released. Find the initial compression of the spring so that the block presses the track with a force mg when it reaches the point P, where the radius of the track is horizontal?
Answer» `SQRT((mgR)/K)` `sqrt((2mgR)/K)` `sqrt((3mgR)/K)` `sqrt((3mgR)/(2K))` Answer :C