(11%) Problem 4: A mass m = 1.5 kg hangs at the end of a vertical spring whose top end is fixed to the ceiling. The spring has spring constant k = 75 N/m a negligible mass. The mass undergoes simple harmonic motion when placed in vertical motion, with its position given as a function of time by y(t) = A cos(wt with the positive y-axis pointing upward. At time t = 0 the mass is observed to be at a distance d= 0.45 m below its equilibrium height with an upward speed o m/s. 20% Part (a) Find the angular frequency of the oscillation, in radians per second. w = 7.100 Correct! * 20% Part (b) Find the value of q, in radians. Q = 0.7500 X Attempts Remain Feedback: is available. 20% Part (c) Calculate the value of A, in meters. 20% Part (d) What is the mass's velocity along the y-axis, in meters per second, at time t = 0.15 s? 20% Part (e) What is the magnitude of the mass's maximum acceleration, in meters per second squared? Grade Sum amax Deductions