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    gilberkb's Avatar
    gilberkb Posts: 1, Reputation: 1
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    #1

    May 16, 2012, 07:21 AM
    solve prob.4.17 assuming that the 330-N force is replaced with an 82.5-N*m clockwise
    solve prob.4.17 assuming that the 330-N force is replaced with an 82.5-N*m clockwise couple. Problem 4.17: Determine the reactions at A and B when (a) x=0,(b) when x=90 degrees, (c) when x=30 degrees.
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    ebaines Posts: 12,131, Reputation: 1307
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    May 16, 2012, 07:50 AM
    Quote Originally Posted by gilberkb View Post
    solve prob.4.17 assuming that the 330-N force is replaced with an 82.5-N*m clockwise couple. Problem 4.17: Determine the reactions at A and B when (a) x=0,(b) when x=90 degrees, (c) when x=30 degrees.
    Without a picture it's not possible to tell what's going on in this problem, but I would offer this advice: for a structure in equilibrium the sum of moments at every point must equal zero. A typical method for solving for reaction forces is to find the sum of moments about each support point, and set them each to zero. This typically gives you enough to solve for reaction forces (assuming that the supports are pinned and not fixed, so that the supports do not apply a moment to the structure).

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