A weight of 32 lb stretches a spring 6ft. The weight is pulled down 2ft below the equilibrium position and then released. What initial velocity v0 given to the weight would have the effect of doubling the amplitude of the vibration? Use g=32 ft/sec 2. (Type an exact answer, using radicals as needed.)

A weight of 32 lb stretches a spring 6ft. The weight is pulled down 2ft below the equilibrium position and then released. What initial velocity v0 given to the weight would have the effect of doubling the amplitude of the vibration? Use g=32 ft/sec 2. (Type an exact answer, using radicals as needed.)