Step-by-step 1st step All steps Answer only Step 1/3 Consider the given beam : 900lb RA 4' Sign conventions: 60lb/ft 8' RC 6' SHEAR eis MOMENT (+) (-) (+) (-) 1080X 400lb Using static equilibrium conditions, the support reactions at A and C are: Mc = 0 R 12 900 8 60 12 6 + 60 6 3+ 400 6 = 0 R = 670lb