An Object Attached to a Coiled Spring Is Pulled Down $a = 17 ; \quad \mathrm { T } = 5$

question 1

Multiple Choice

An object attached to a coiled spring is pulled down a distance a from its rest position and then released. Assuming that
the motion is simple harmonic with period T, write an equation that relates the displacement d of the object from its rest
position after t seconds. Also assume that the positive direction of the motion is up.
- $a = 17 ; \quad \mathrm { T } = 5$ seconds

• A) \(d = - 17 \sin \left( \frac { 2 } { 5 } \pi t \right)\)
• B) \(\mathrm { d } = - 17 \cos \left( \frac { 2 } { 5 } \pi \mathrm { t } \right)\)
• C) \( \mathrm { d } = - 17 \cos \left( \frac { 1 } { 5 } \pi \mathrm { t } \right)\)
• D) \(d = - 5 \cos \left( \frac { 2 } { 17 } \pi t \right)\)

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