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

Multiple Choice

The displacement from equilibrium of an oscillating weight suspended by a spring is given by $y ( t ) = 3 \cos 10 t$ , where y is the displacement in centimeters and t is the time in seconds.Find the displacement when $t = 0.65$ , rounding answer to four decimal places.

A) -3.7018 cm
B) -6.4350 cm
C) 23.8825 cm
D) 2.9298 cm
E) -1.6362 cm