Solution of task 17.3.12 from the collection of Kepe OE
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17.3.12
When the train brakes, the center of mass C of the car has an acceleration a = 5 m / s2. The couplings of the car are powered by neighboring cars F1 = 10 kN, F2 = 30 kN. Determine in kN the pressure of the wheels A on the path. The weight of the car is m = 3 · 104 kg, the dimensions are h1 = 2.8 m, h2 = 1.6 m, l = 5 m. Vibrations are neglected. (Answer 102)