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  3. 4 for the assembly shown determine the internal loadings on...

Question: 4 for the assembly shown determine the internal loadings on...

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4. For the assembly shown, determine the internal loadings on cross-section a-a (This is a 2D problem, since none of the forces point in or out of the page. So the internal forces will be in the x and y directions, and the internal moment will be either clockwise or counterclockwise. Since this moment wont make what we have called a smiley-face or frowny-face (itll be sideways), Ill pick the sign convention here: if the internal moment required to maintain equilibrium is counterclockwise call it positive; if it is clockwise, call it negative.) 4 in. 120 lb in. 400 lb
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