## Question:

The collar of weight W is constrained to move on the smooth rod. It is attached to the three springs which are unstretched at s = 0. If the collar is displaced a distance s = ${ s }_{ 1 }$ and released from rest, determine its speed when s = 0. Given: W = 20 lb , ${ k }_{ A }$ = 10 lb/ft , ${ s }_{ 1 }$ = 0.5 ft , ${ k }_{ B }$= 10 lb/ft , g = ${ 32.2ft/s }^{ 2 }$ , ${ k }_{ C }$= 30 lb/ft