The spring has a stiffness $k=200\frac{N}{m}$ and an unstretched length of $0\mathrm{.}5$ m $.$ It is attached to the $4\mathrm{.}8-kg$ smooth collar and the collar is released from rest at $A.$ Neglect the size of the collar.

Part A

Determine the speed of the collar when it reaches $B.$

Express your answer to three significant figures and include the appropriate units.

$v_B=$

$$

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