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Friction Force

  1. Nov 1, 2011 #1
    In (the partial) solution, why does it consider the Tension,T, for finding the friction force between m1 and the surface? The tension is only affecting m1 in the horizontal direction. From where, the vertical component is apperaing?
     

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  3. Nov 1, 2011 #2

    Simon Bridge

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    from ƩF = ma and the free body diagram - the frictional force also acts horizontally to oppose the tension force so you need it.
    Ultimately, it will form the link between the two masses.
     
  4. Nov 1, 2011 #3

    Doc Al

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    Careful. The tension pulls on the pulley--which is attached to m1--in two directions.
     
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