The sleds move evenly and rectilinearly on a horizontal surface under the action of a force of 250 N directed towards the movement. Determine the magnitude of the friction force.
To solve this problem, we recall Newton’s laws, based on which, if the body moves uniformly and rectilinearly, then the forces compensate each other, that is, the friction force compensates for the driving force, then:
Ftr = F = 250N
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