A roller working on a highway paving puts a pressure of 400 kPa on it.

A roller working on a highway paving puts a pressure of 400 kPa on it. The contact area of the skating rink with the highway is 0.12 m2. What is the weight of the roller?

The pressure produced by the weight of the roller on the highway can be calculated using the formula:

P = F / S, where P is the value of pressure exerted by the weight of the roller (P = 400 kPa = 400 * 10 ^ 3 Pa), F is the force acting on the highway (F = Pk (weight of the roller)), S is the contact area skating rink from the highway (S = 0.12 m2).

Let us express from the formula and calculate the weight of the roller:

PB = P * S = 400 * 10 ^ 3 * 0.12 = 48000 N = 48 kN.

Answer: The weight of the roller is 48 kN.