$\text { A buoy oscillates in simple harmonic motion } y = A \cos \text { at as waves move past }$

question 50

Multiple Choice

$\text { A buoy oscillates in simple harmonic motion } y = A \cos \text { at as waves move past }$ it. The buoy moves a total of $3.5$ feet (vertically) between its low point and its high point. It returns to its high point every 14 seconds. Write an equation describing the motion of the buoy if it is at its high point at $t = 0$ .

• A) \(y = 3.5 \cos \frac { \pi } { 7 } t\)
• B) \(y = 1.75 \cos 7 \pi t\)
• C) \(y = 1.75 \cos \frac { \pi } { 14 } t\)
• D) \(y = 1.75 \cos \frac { \pi } { 7 } t\)
• E) \(y = 3.5 \cos 14 \pi t\)

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