A massless spring of length L = 56 cm is placed on a frictionless table. Its left end is attached to a rigid support, and end is attached a mass 1.2 kg. The spring constant is K = 360 N/m. The spring is pulled to the right by 12 cm, and th and it oscillates on the table. Calculate the a) frequency of oscillations (in hertz), b) maximum value of kinetic energy of the mass during its motion (in joules). c) maximum value of the speed of the mass during its motion (in m/s). Write the value of the speed in canvas, in m/s