Determine the reactions at A and B when 0 = 55°. 250 mm 150 mm C A 90 mm D

Determine the magnitudes of all pin reactions for the frame loaded as shown. 860 N 465 mm OC B 850 mm 300 57° A D Answers: A = B = N D =

Determine the reaction at A when B = 30°. 280 mm A 180 mm B D 100 mm C 150 N O 189 N O 210 N O 244 N O 276 N

2. Two cylindrical rods, AC (made of steel, E, = 200 GPa), and CE (made of brass, Eb = 105 GPa) are joined at C and restrained by rigid supports at A and E. The diameter of the steel rod is 40 mm. The diameter of the brass rod is 30mm. The applied forces are PB = 60 kN and Pp = 40 kN. Determine: (a) the reactions at A and E, (b) the deflection of point C relative to point A. Ans: RA = 62.8 kN +, Re = 37.2 kN –, &c = 0.0463 mm →) B C D E Pp 180 mm 120 mm 100 mm 100 mm