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Math Help - vectors ramp force question

  1. #1
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    vectors ramp force question

    so the question is...

    A mining car which rolls freely on a track is held in position by a steel cable parallel to the track(ramp). If the car has a mass of 1200 kg, find the tension in the cable.
    The inclined ramp makes an angle of 70 degrees to the ground.

    I have no clue where to start. :/. please start me off if you can please!
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  2. #2
    MHF Contributor Calculus26's Avatar
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    For any ramp problem the force on an object on the ramp has 2 components one parallel and one perpindicular

    Draw a ramp and the weight vector is directed downward--Then with a little trig its fairly easy to see

    The parallel component is

    F = weight*sin(theta)

    The perpindicular component is

    F = weight *cos(theta)

    The tension in the cable equals the parallel component
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