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A $0.15\text{ kg}$ block is attached to a horizontal spring of constant $15\text{ N/m}$. The block is pulled $5\text{ cm}$ from its equilibrium position and released at $t = 0$.

Which of the following equations correctly represents the position of the block as a function of time?

A

$x(t)=0.025\cos(10t)$

B

$x(t)=0.05\sin(10t)$

C

$x(t)=0.05\cos(10t)$

D

$x(t)=0.025 \sin(100t)$

E

$x(t)=0.05 \cos(100t)$

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