1.The rod is made of a-36 steel and has a diameter of .25 in. if the springs are compressed 0.5 in when the temperature of the rod is T=40F, determine the force in the rod when its temperature is T=160 F. K=1000lb/in. and length is 4 ft long.
2.(a) an equivalent force-couple system at C,
(b) an equivalent system consisting of a vertical force at B and a second force atD.