Question

Площадь соприкосновения всех колес вагона с рельсами 0,001 м2. Какое давление производит этот вагон на землю, если его масса 30 т?

Answer 1

p=F/S

F=ma

p=ma/S

P=30000*10/0.001=3*10^8 Па

Ответ: 3*10^8 Па

Answer 2

Calculation of Pressure

To calculate the pressure exerted by the wagon on the ground, we need to use the formula:

Pressure = Force / Area

Given that the area of contact between all the wheels of the wagon and the rails is 0.001 m², and the mass of the wagon is 30 tons (or 30,000 kg), we can calculate the force exerted by the wagon on the ground using the formula:

Force = Mass x Gravity

where the acceleration due to gravity is approximately 9.8 m/s².

Let's calculate the pressure:

Force = 30,000 kg x 9.8 m/s² = 294,000 N

Pressure = 294,000 N / 0.001 m² = 294,000,000 Pa

Therefore, the wagon exerts a pressure of 294,000,000 Pascal (Pa) on the ground.

Please note that this calculation assumes that the weight of the wagon is evenly distributed among all the wheels and that the contact between the wheels and the ground is uniform.