Am = 0.453 kg mass attached to a spring moves on a horizontal frictionless table in simple harmonic motion with amplitude 16 cm and period 2 seconds. x =0 x k m Part a Assuming that the mass is released from rest at t = 0 seconds and x = -16 cm, find the displacement as a function of time. Select the correct answer Or = -16cos(# ) cm O x = 16cos(at + 7) cm Amour O r = 16cos(at) cm Or = -16cos(at + 7) cm Or = -16cos(2xt + #) cm Saved Part b What is the spring constant of the system in SI units? Select the correct answer O 1.82 N/m O 2.93 N/m O 4.47 N/m O 3.27 N/m O 1.53 N/m No answer submitted Part c What is the resonance frequency, fres of the system? Select the correct answer O 0.0425 Hz O 0.138 Hz O 0.500 Hz O 0.186 Hz O 0.208 Hz No answer submitted Part d What is the maximum speed of the system? Select the correct answer 4.25 cm/s 13.8 cm/s 50.2 cm/s 18.7 cm/s 20.8 cm/s