A block of mass 'm' moving with a speed 'u' compresses a spring through a distance 'x' before its speed reduces by 25%. The spring constant of the spring is

A block of mass 'm' moving with a speed 'u' compresses a spring throug

1.	A block of mass 'm' moving with a speed 'u' compresses a spring through a distance 'x' before its speed reduces by 25%. The spring constant of the spring is
Answer» `(mv^2)/(4x^2)` `(3mv^2)/(4x^2)` `(7mv^2)/(16x^2)` `(9mv^2)/(16x^2)` ANSWER :C