The uniform smooth rod in Example 5.10 is supported by a smooth wall at A and rollers at B and C. The reactions at B and C are found to be By = -1 kN and Cy = 1.35 kN, and they act at 30 degrees from the vertical. What is the reaction at the smooth wall, Ax?
Explanation
This question demonstrates solving for a final unknown reaction after other reactions have been determined, paying close attention to the signs. The negative value for By indicates its direction is opposite to the one assumed in the FBD, and this must be carried through in subsequent calculations.
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