Chapter 3.5, Problem 13E

A buoy floating in the ocean is bobbing in simple harmonic motion with period 6 seconds and amplitude 3 ft. Its displacement d from sea level at time t = 0 seconds is 0 ft, and initially it moves downward. (Note that downward is the negative direction.) Give the equation modeling the displacement d as a function of time t. Osino Ocos O

COS s 3ede |- sinb