Does the friction force act on a stationary car?

A car on the road is affected by the force of gravity F, equal to F = m * g, and the reaction force of the support, which compensates for this force of gravity, equal to N. If we try to move the car from a place with the help of some force G, the car will not move, since it is acted upon by the static friction force Ftr, equal to Ftr = k * N, where k is the coefficient of static friction. Gradually increasing the force G and achieving the condition G> Ftr, we will be able to move the car.

Therefore, the correct answer is: if the car is completely stationary, and no forces act on it that seek to move it, then there is no friction force either. However, in the presence of even a small force, the static friction force begins to act.



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