roblem4.9 Part A Consider the beam shown in (Figure 1). Suppose that P- 18 kN an

Question

roblem4.9 Part A Consider the beam shown in (Figure 1). Suppose that P- 18 kN and w 8 kN/m. Follow the sign convention. Determine the internal normal force at point C Express your answer to three significant figures and include the appropriate units. Submit My Answers Give Up Figure 1 1of1 Correct Part B Determine the internal shear force at point C Express your answer to three signitficant figures and include the appropriate units 12.8 kN Submit My. Answers Give Up Incorrect: Try Again; 8 attempts remaining

Explanation / Answer

Part B :

Let the vertical reaction at supports A and B be Ra and Rb

Let us consider moment equilibrium at support A

(1/2)*6*8*4 + 18*9 - 12Rb = 0

Rb = 21.5 kN

From equilibrium of vertical forces,

Ra = (1/2)*6*8 + 18 - 21.5 = 20.5 kN

Shear Force at C = 20.5- (1/2)*3*4 = 14.5 kN

Part C :

Moment at C = (21.5*3) - (.5*3*4*3/3) = 58.5 kNm

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