Statics rope problem

  1. 1. The problem statement, all variables and given/known data
    Using a uniform strut, a rigid brace hinged at the floor, a
    person holds a 30-kg engine in equilibrium while it is being
    repaired. The strut has a mass of 12.5 kg. A smooth rope passes
    over a pulley at the end of the strut. (a) What is
    the force exerted on the rope by the person? (Specify the direction
    of this force by calculating the angle theta that the rope
    makes with the horizontal.) (b)What forces are exerted by the


    2. Relevant equations
    3. The attempt at a solution
    Looking at the engine, Fy=0 so Tension=mg. I don't know where to go from here.
  2. jcsd
  3. tiny-tim

    tiny-tim 26,016
    Science Advisor
    Homework Helper

    Hi Jstew! :smile:
    Well, that's the answer to (a), isn't it? :smile:

    For (b), start by taking moments about the hinge. :wink:
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