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March 30, 2017

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Suppose that in the same Atwood setup another string is attached to the bottom of m1 and a constant force f is applied, retarding the upward motion of m1. If m1 = 5.30 kg and m2 = 10.60 kg, what value of f will reduce the acceleration of the system by 50%?


thank you!

  • Physics - ,

    m2*g-m1*g-F=ma/2

    where
    g(m2-m1)=ma
    so
    g(m2-m1)-F=g(m2-m1)/2
    solve for F

  • Physics - ,

    F= {9.8m/s^2 (10.6-5.30)}/ 2
    F= {9.8 (5.3)}/2
    F= 51.94/2
    F= 25.97
    {Significant figures} F = 26N

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