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