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Calculating the tension attached to a ball attached to coaster rolling down incline

  1. Mar 3, 2009 #1
    1. The problem statement, all variables and given/known data

    Ball has a mass of 0.10 kg
    the car is at point D moving down a 30 degree incline with an acceleration of 5.0 m/s^2


    http://img10.imageshack.us/img10/6526/fullscreencapture322009.jpg [Broken]

    (D in picture)

    calculate the horizontal component of the tension in the string in newtons

    calculate the vertical component of the tension in the string in newtons



    2. Relevant equations

    F=ma

    I don't think my FBD are right... but maybe

    T vertical = (ma+mg)/(costheta)




    3. The attempt at a solution

    I drew a FBD
    and I know the answers but don't know how to get them

    The horizontal component of the Tension = 0.43 N
    The vertical component of the Tension = 0.75

    The angle theta used is not going to be the same as the angle of the incline, correct?
    How do you determine that angle
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
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