Question

4-매 4m rm

Draw the appropriate FBD; set up the Equilibrium Equations as discussed, but for the moment, set your pivot point at thecoordinate (0m, 4m). Then begin your beam analysis using the “Method of Joints” technique, beginning with joint D. Analyze all four joints toconfirm your results.

Why is this pivot valid? Name another coordinate not on the structure thatwould effectively “cancel” at least one unknown force.

Answer 1

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