The body moves uniformly along the horizontal surface; its pressure is 8N; the friction force is 2N, which is equal to the coefficient of friction.
Initial data: F (force of pressure of a body on a horizontal surface) = 8 N = Ft (force of gravity) = N (force of reaction of support); Ftr. (value of sliding friction force) = 2 N.
The friction coefficient is determined from the formula for calculating the friction force: Ffr = μ * N, whence μ = Ffr / N.
Calculation: μ = 2/8 = 0.25.
Answer: The coefficient of friction is 0.25.
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