The 9-lb collar A can slide on a frictionless vertical rod and is attached as shown to a spring. The spring is unstretched when en h = 12 in. Knowing that the constant of the spring is 3 lb/in. determine the value of h for which the system is in equilibrium. .transtutors.com/Transtutors001/Images/Transtutors001_13bba795-7ac4-457c-9a37-044fcd33c962.PNG”>
