•213. The rigid bar AB, attached to two vertical rods as shown in the figure, is horizontal before the load is applied. If the load P=50KN, determine is vertical movement. ALUMINUM L=4m A=500mm? STEEL L=3m A=300mm2 E=200GPA E=70GPa 2m 3m

Consider the truss shown in (Figure 1). Suppose that F = 12 kN. gure B C D 12 m, 6 @ 2 m E F 3 m Part A Determine the force in member CD and state if this member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. FCD = Submit Part B FCJ = Submit __ Part C μA Value Request Answer Determine the force in member CJ and state if this member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. μA Value Units Request Answer ? Units ? Determine the force in member KJ and state if this member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension.

Bar ABC is rigid and rotates freely about B. The loads consist of a point load and a uniform temperature change in both bars CD and EF. Determine the temperature change (AT) at which points A and E first come into contact. Report your answer rounded to the nearest degree. 100 in initial gap = 0.11 in F T E A = 2.0 in² AEF EEF = 12,000 ksi aEF LEF 100 in = 13.5 x 10-6 1/°F = 50 in B 14 k 100 in D с ACD= 1.5 in² ECD CD= 6.5 x 10-6 1/°F = 29,000 ksi = 150 in LCD Y Z