What is the friction force acting on a body with a mass of 800 kg, with its uniform

What is the friction force acting on a body with a mass of 800 kg, with its uniform movement on a horizontal surface is the sliding friction coefficient of 0.4?

m = 800 kilograms – body weight;

g = 10 m / s ^ 2 – free fall acceleration;

k = 0.4 – coefficient of sliding friction.

It is required to find the friction force Ffr (Newton).

Since the movement of the body is uniform, then:

Ftr = k * N = k * m * g = 0.4 * 10 * 800 = 3200 Newton.

Answer: The friction force is 3200 N (3.2 kN).