A collar with a pulley slides on a frictionless vertical bar GH. A string ABCD is wrappe...

A collar with a pulley slides on a frictionless vertical bar GH. A string ABCD is wrapped around the pulley, where portion AB of the string is horizontal. A spring with 2 lb/in: stiffness is placed between the collar and point H. The spring has 8 in. unstretched length and 6 in: final length. The collar and pulley have a combined weight of 5 lb, and the weights of all other components are negligible. Determine the value of P required for equilibrium, and the reaction between the collar and bar GH.