4.37 Bar AC supports two 400-N loads as shown. Rollers at A and C rest against frictionless surfaces and a cable BD is attached at B. Determine (a) the tension in cable BD, (b) the reaction at A, (c) the reaction at C. 100 mm 100 mm -300 mm A 400 N 0 400 N 250 mm B D 150 mm Fig. P4.37 500 mm-