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Posted by on Saturday, October 23, 2010 at 9:37am.

A 1030 kg car is pulling a 360 kg trailer. Together, the car and trailer have an acceleration of 2.07 m/s2 directly forward.

How do you find net force on the car and trailer?

  • Physics - , Saturday, October 23, 2010 at 10:34am

    the car is pulling the trailer with a net force of F=masstrailer*a

    The trailer is pulling back on the car with the same force.

  • Physics - , Saturday, October 23, 2010 at 10:36am

    You use Newton's second law,

    F = M a

    If you want the net force on car and trailer TOGETHER,

    F = (1030 + 360)*2.07 N

    Note that the weight does not appear. It is balanced by the upward force on the tires.

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