P2 (7-80 mod) A beam is supported by a roller at A, an internal pin at B and a fixed support at C as shown. a) Determine the reactions at the supports b) Complete the fbd of the beam on the blank graphs shown on the following pages and draw the V and M diagrams below it using a scale of 1 division = 200 lb for the V diagram and 1 division = 200 lb.ft for the M-diagram c) Determine the maximum and minimum internal shear and bending moment and their locations in the beam. d) Does the internal shear and bending moment at B correspond to the internal pin reactions at B (in magnitude and sign)? 900 lb-ft 200 lb -3 ft- 2 ft -4 ft- B C 900lb. 3' 11 11 111111 11 7-80 (mad) 2' 2001b 4' 400 lb/ft 400lb/44 -V-diagn -M-diagra