The position of a mass-on-a-spring oscillator is given by , where the value of t is in s...

The position of a mass-on-a-spring oscillator is given by , where the value of t is in seconds and A = 0.35 m. (a) What is the maximum kinetic energy of an oscillator of mass 1.7 kg? (b) Suppose the amplitude is increased so that the maximum kinetic energy is doubled. What is the new value of A?