A uniform beam of length and weight rests on supports at and . A load of is placed on the beam at a distance of from . Find the reaction at .
Answer and explanation
Correct answer: C.
- Step 1: Take moments about : .
- Step 2: N.
Answer
.
Why not the others: is what you get if you give the reaction at . is what you get if you assume equal reactions. is what you get if you leave the weight of the beam out of the moments.
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