An Object Weighing W Pounds Is Suspended from the Ceiling $y = \frac { 1 } { 2 } e ^ { - \frac { t } { 4 } } \cos 2 t , t > 0$

question 35

Multiple Choice

An object weighing W pounds is suspended from the ceiling by a steel spring (see figure) .The weight is pulled downward (positive direction) from its equilibrium position and released.The resulting motion of the weight is described by the function​ $y = \frac { 1 } { 2 } e ^ { - \frac { t } { 4 } } \cos 2 t , t > 0$ ​ where y is the distance (in feet) and t is the time (in seconds) .
Use a graphing utility to select the graph of the function.
​​ ​

• A)​
• B)​
• C)​
• D)​

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