Your answer is partially correct.

The $3\mathrm{.}7-$kg collar is released from rest at $\backslash ($ A $\backslash )$ and slides down the inclined fixed rod in the vertical plane. The coefficient of kinetic friction is $0\mathrm{.}63.$ Calculate $\backslash (($a$)\backslash )$ the velocity $\backslash ($ v $\backslash )$ of the collar as it strikes the spring and $\backslash (($b$)\backslash )$ the maximum deflection $\backslash ($ x $\backslash )$ of the spring.

Answers:

$($a$)\backslash ($ v$=\backslash )\backslash (\backslash$mathrm$\{$m$\}/\backslash$mathrm$\{$s$\}\backslash )$

$($b$)\backslash ($ x$=\backslash )$ mm