Question

Assume you have a beam that is 15 feet long and carries a concentrated load of 900 pounds at a distance of 4 feet from R . Reaction (R ) is pinned 10 feet from the load. Reaction R = 300 lbs and R = 600. What is the maximum shear in lbs? Please show your work and provide answer.

Answer 1

Answer:

maximum shear force is 600 lb

Explanation:

given data

long = 15 feet

load = 900 pounds

distance from R  = 5 feet

pinned from the load =  10 feet

Reaction R = 300 lbs

Reaction R = 600

solution

we get here moment at point 2 that is

∑M2 = 0

that is express as

R1(15) - 900 (5)  = 0

so R1 will be = 300 lb

and

when ∑Fy = 0

so here 300 + R2 - 900 = 0

so R2  = 600 lb

so here maximum shear force is 600 lb