Physics

Commercial airplanes are sometimes towed out of the passenger loading area by a tractor. 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.
(a) If the acceleration is 0.250 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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