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Piece of Cement in a Rotating Cement Mixer

  1. Nov 22, 2011 #1
    Is it possible for a piece of cement in a rotating cement mixer to travel at constant speed?

    If we graph a cement mixer (circle) on the Cartesian plane with a radius of 1, then at (1, 0), there would be a gravity vector pointing down and a normal force pointing towards (0, 0). Are there any other vectors that can cause the net force to point towards the centre of the cement mixer (to cancel out the gravity vector)?
  2. jcsd
  3. Nov 22, 2011 #2
    The problem of resolving the forces in a cement mixer is complicated surely by the coriolis effect through the medium from the centre to the perimeter
  4. Nov 22, 2011 #3
    I'm referring to a free body diagram relative to the ground.
  5. Nov 22, 2011 #4
    Friction with the wall. Without friction the cement will just be at rest and the mixer will rotate nicely around it.
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