A 0.49 kg mass at the end of a spring vibrates 9.0 times per second with an amplitude of 0.20 m.
(a) Determine the velocity when it passes the equilibrium point.
(b) Determine the velocity when it is 0.10 m from equilibrium.
(c) Determine the total energy of the system.
(d) If the amplitude of oscillation were increased by a factor of 3.2, by what factor does the total energy change?