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Ap Physics 1

The 1800 kg tractor exerts a force of 1.75 104 N backward on the pavement, and the system experiences forces resisting motion that total 2400 N. If the acceleration is 0.210 m/s2, what is the mass of the airplane?
(b) Calculate the force exerted by the tractor on the airplane, assuming 2100 N of the friction is experienced by the airplane.

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  1. Fap = 17,500 N. = Force applied.
    Fk = 2400 N. = Force of kinetic friction

    a. m=(Fap-Fk)/a
    m = (17,500-2400)/0.21=71,905 kg.

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  2. b. Fap-2100 = m*a
    Fap-2100 = 71,905*0.21
    Fap-2100 = 15,100
    Fap = 17,200 N.

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