If a spring-mass system makes 12 complete up-and-down cycles with amplitude of 0.50 meters in 8.0 s, (a) What is its frequency? (b) What is its period? (c) What is the spring constant k of the spring if the mass of the system is 0.25 kg? (d) What is the total potential energy of the system? (e) What is the maximum speed of the mass? Where the system has its maximum speed?