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Determine the velocity of the Slider

  1. Mar 19, 2013 #1
    1. The problem statement, all variables and given/known data
    The 0.6 lbf slider moves freely along the fixed curved rod from A to B in the vertical plane under the action of the constant 1.3 lb tension in the cord. If the slider is released from rest at A, calculate its velocity v as it reaches B.


    I have attached an image of the question

    2. Relevant equations



    3. The attempt at a solution

    As far as I can tell this is an energy problem, hence:

    T1 + V1 + U1-2 = T2 + V2

    T1 and V1 are zero as there is no initial energy, spring forces or gravitational forces at A.

    Hence, I get:



    (13/12)sin(67.38) = 1/2*(.6/32.3)v2b - 0.6*(10/32.3)

    v = 11.28

    Not quite the answer I'm looking for and I'm a little unsure where I'm making my mistake.

    Any help would be appreciated.
     

    Attached Files:

  2. jcsd
  3. Mar 20, 2013 #2

    Simon Bridge

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    Please explain your reasoning behind the numbers you wrote down.
     
  4. Mar 20, 2013 #3

    haruspex

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    Ignore everything left of the pulley for a moment. If you just watched the string coming over the pulley, how would you figure out the work done by the force?
    (Also, I don't understand the division in this term: 0.6*(10/32.3))
     
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