An Object Is Attached to a Coiled Spring $\frac { 7 } { \pi }$

question 333

Multiple Choice

An object is attached to a coiled spring. The object is pulled down (negative direction from the rest position) and
then released. Write an equation for the distance of the object from its rest position after t seconds.
-A weight attached to a spring is pulled down 5 inches below the equilibrium position. Assuming that the frequency of the system is $\frac { 7 } { \pi }$ cycles per second, determine a trigonometric model that gives the position of the weight at time $t$ seconds.

• A) \(y = - 5 \cos 14 t\)
• B) \(y = 5 \cos 14 t\)
• C) \(y = - 5 \cos \frac { 7 } { \pi } t\)
• D) \(y = 5 \pi \cos 7 t\)

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