A block of mass .m. moving with a speed .v. 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 .v. compresses a spring throug

1.	A block of mass .m. moving with a speed .v. 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))/(16 x^(2))` `(9mv^(2))/(16 x^(2))` Answer :C