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Homework Help: Identifying all forces on this stick

  1. Sep 14, 2010 #1
    1. The problem statement, all variables and given/known data
    A stick is connected by a hinge to a wall. The other end of the stick is attached to the wall with a string. The stick is horizontal and has length L and the string makes an angle of θ with the stick.

    3. The attempt at a solution
    So imagine a right triangle. The vertical side adjacent to the right angle is the wall. The horizontal adjacent side is the stick, connected to the wall. The hypotenuse is the string connecting the edge of the stick to the wall.

    The forces acting on the stick would be according to me:

    The tension, acting in the same direction of the string, but can be broken down into x and y components. The mg of the stick, acting on it in the middle of the stick. The normal force from the wall-stick connection acting in the horizontal direction.

    I'm wondering if there would be a frictional force pointing in the up direction at the stick wall connection?
  2. jcsd
  3. Sep 14, 2010 #2


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    Science Advisor
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    Yes there should be.
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