A two-axle trailer with a load exerts a pressure of 500 kPa on the road.
| February 6, 2021 | education
A two-axle trailer with a load exerts a pressure of 500 kPa on the road. The area of contact of each wheel with the road is 125 cm. What is the mass of a trailer with a load?
Initial data: P (pressure exerted by a two-axle trailer on the road) = 500 kPa; S1 (area of contact of one trailer wheel with the road, 4 wheels) = 125 cm2.
Constants: g (acceleration due to gravity) = 10 m / s2.
SI system: P = 500 kPa = 500 * 10 ^ 3 Pa; S1 = 125 cm2 = 125 * 10 ^ -4 m2.
The mass of the loaded trailer can be determined from the formula for calculating the pressure: P = F / S = m * g / 4S1, whence m = P * 2S1 / g.
Let’s perform the calculation: m = 500 * 10 ^ 3 * 4 * 125 * 10 ^ -4 / 10 = 2500 kg or 2.5 tons.
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