4) A mass of 0.42 kg, attached to a horizontal spring of force constant 38 N/m, undergoes SHM without friction at an amplitude of 5.3 cm. (a) What is the maximum energy of the mass-spring system? (b) Determine the maximum speed of the mass using energy concepts. (c) What is the speed of the mass when the displacement is 4.0 cm? (d) Determine the sum of the system's kinetic energy and elastic potential energy when the displacement is 4.0 cm