$1.$ The $2$ kg collar is released from position A such that produces a

maximum the spring compression of $150$ mm$.$ Determine the

initial velocity of the collar at the moment it is released from A

and the velocity of the collar right before it makes contact with

the spring at B$.$ The coefficient of kinetic friction between the

collar and the rod is $\backslash$mu k $=0\mathrm{.}4.$ Use Energy Methods for your

solution, otherwise solution will be graded as zero. Start your

analysis by presenting the adequate Free Body Diagram

$($FBD$),$ solutions without a FBD will be graded as zero.