# A body weighing 30 kg moves evenly. Determine the sliding force of the bar if the coefficient of friction is 0.45.

August 31, 2021 | education

| To find the sliding force of the bar, we project all the forces onto the ОХ axis (we assume that the bar slides on a horizontal surface): m * a = 0 = F – Ftr, from where we express: F = Ftr = μ * m * g.

Constants and variables: μ – coefficient of friction (μ = 0.45); m is the mass of the bar (m = 30 kg); g – acceleration due to gravity (g ≈ 10 m / s2).

Calculation: F = μ * m * g = 0.45 * 30 * 10 = 135 N.

Answer: The sliding force of the bar is 135 N.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.