KHW 4B Problem 4.151 8 of 8 Part A Take that wo 3.0 kN/nm (Figure 1) Replace the

Question

KHW 4B Problem 4.151 8 of 8 Part A Take that wo 3.0 kN/nm (Figure 1) Replace the loading by a single resultant force and determine its magnitude Express your answer to three significant figures and include the appropriate units. FR 74.66 kN Submit ous Answer Request Answer Incorrect. Try Again: 5 attempts remaining Part B Specify the location of the force measured from point O. Assume that the location of the equivalent resultant force is not necessary on the beam Figure Express your answer to three significant figures and include the appropriate units. 8.66-1m 15 kN 0 500 kN·m Submit Previous Answers Request Answer 7.5 m 4.5 m X Incorrect; Try Again; 5 attempts remaining

Explanation / Answer

a)

Resultant force is

FR =F1+F2+15

FR =(1/2)*3*7.5+(1/2)*3*4.5+15

FR =33 KN

b)sum of moments is zero

FR*d=F1*X1+F2*X2+15*(7.5+4.5)+500

33d=(1/2)*3*7.5*((2/3)*7.5)+(1/2)*3*4.5*(7.5+(1/3)*4.5)+180+500

d=24.15 m

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