Chapter 3.5, Problem 17E

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

During a 12.8-hour period, the water level at Bay of Fundy, Nova Scotia, started at mean sea level (h=0), rose to 23.8 ft above sea level, dropped to 23.8 ft below mean sea level, and then returned to mean sea level. Which of the following model describes the height of the tide in ft as a function of time in hours, h(t) ? 23.8 sin (12.8 t) 23.8 sin(12.8 t) 47.6 sin(0.15625 t) 47.6 sin(12.8 t) 23.8 sin(0.15625 t) 47.6 sin (12.8t)