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Fluids Mechanics - Determine algebraic formula for velocity

  1. Feb 27, 2010 #1
    1. The problem statement, all variables and given/known data

    A block of weight W is being pulled over a table by another weight Wo, as shown in the figure.
    Find an algebraic formula for the steady velocity U of the block if it slides on an oil film of
    thickness h and viscosity μ. The block bottom area A is in contact with the oil. Neglect the cord weight and the pulley friction.

    http://www.facebook.com/photo.php?pid=11251105&id=807445410 [Broken]

    2. Relevant equations

    the shear stress τ=μ du/dy
    the shear force F=τ*A
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Feb 27, 2010 #2
    1) If conveyor moving with a linear speed of 2.5 feet per second has a total weight of 1750 lb, the conveyor holds approximately __________ lb.ft of kinetic energy.

    2) A Motor has a conveyor as a load, which has a total inertia of 122 lb.ft*. if the motor has a maximum torque capability of 78 lb.ft, the motor can reach its full speed od 1725 rpm in approximately _________ seconds.
     
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