The Displacement from Equilibrium of an Oscillating Weight Suspended by a Spring

question 12

Multiple Choice

The displacement from equilibrium of an oscillating weight suspended by a spring and subject to the damping effect of friction is given by $y = 2 e ^ { - t } \cos 6 t$ where y is the displacement in centimeters and t is the time in seconds (see figure) .Find the displacement when $t = \frac { 1 } { 5 }$ .Round your answer to two decimal places.​ ​ ​

• A)0.89 cm
• B)0.59 cm
• C)0.99 cm
• D)1.09 cm
• E)0.79 cm

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