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Homework Help: Unbalanced Force Components and Acceleration

  1. Apr 3, 2014 #1
    1. The problem statement, all variables and given/known data

    Mass of Cart = 1156g = 1.156kg
    Mass on string = 400g = 0.4kg
    Mass on Cart = 1003g = 1.003kg

    The weight attached to the pulley generates the applied force.


    2. Relevant equations

    Calculate the force applied.

    3. The attempt at a solution

    Look on the sheet.
    Last edited: Apr 3, 2014
  2. jcsd
  3. Apr 3, 2014 #2


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    Homework Helper

    the Normal Force by the track is to keep the cart & load from sinking into the track.
    it looks like the string is pulling somewhat upward but not entirely upward;
    only the upward component will help the track not get sunk into.
    Do you know that string's angle?

    From a theory perspective: how much total mass is going to accelerate? (no, not 2.159kg)
    which component of the string's Tension will be causing that acceleration?

    Experimental perspective: did you measure its acceleration with the ticker tape?
    then the horizontal component of string Force applied to (car & load) is pretty easy to deduce.

    The theory, on the other hand, is a bear because the angle makes the hanger's acceleration different than the car & load acceleration.
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