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    tjy7785153 Posts: 1, Reputation: 1
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    #1

    Nov 12, 2012, 09:45 AM
    ask physics questions
    True or false
    1,A frictionless surface can only exert a force perpendicular to the surface.
    2,A rod connected to a smooth pin or hinge can exert a force that is not parallel to the rod.
    3,In a typical free-body diagram, it is not necessary to draw the couple moments that act on the body.
    4,For a two-force member to be in equilibrium, the couple moment must be zero.
    5,A single smooth pin connected to a body can exert a moment on the body parallel to the pin.
    6,If a body is subjected to more unknown reactions than available equations of equilibrium, then the problem cannot be solved completetly.
    7.Couple moments must be placed at a specific point on a free-body diagram.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Nov 13, 2012, 05:54 PM
    What do you think the answers are? Post your answers, and why, and we'll help if you get stuck.
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