The system is released from rest with no slack in the cable and with the spring stretched $170$ mm $.$ Determine the distance s traveled by

the $3\mathrm{.}5-kg$ cart before it comes to rest $(a)$ if $m$ approaches zero and $(b)$ if $m=2\mathrm{.}5kg.$ Assume no mechanical interference and no friction.

The distance $s$ is positive if up the incline, negative if down.

Answers:

$($a$)m=0,$

$s=$

m

$($b$)m=2\mathrm{.}5kg,s=$

m