Question

Какова площадь соприкосновения каждого из 8 колёс вагона с рельсом, если масса вагона с грузом 80 тонн, а оказываемое колесом давление равно 400 МПа? В своем ответе используйте формулы, взятые для решения.

Answer 1

P=F/S
S= F/p
F=m*g
S=m*g/p
S=80*10^3*10/(400*10^6)=2*10^-3 м^2
Т. к. колес 8, то площадь 1 колеса
S1=S/8=2*10^-3/8=0,25*10^-3 м^2

Answer 2

Держи ответ в файле! p=F/S

Answer 3

Calculation of the Contact Area between Each Wheel and the Rail

To calculate the contact area between each wheel and the rail, we can use the formula:

Contact Area = Force / Pressure

where: - Force is the weight of the wagon with the load, which is given as 80 tons. - Pressure is the pressure exerted by each wheel, which is given as 400 MPa.

First, we need to convert the weight of the wagon from tons to newtons. Since 1 ton is equal to 1000 kilograms and 1 kilogram is equal to 9.8 newtons, we can calculate the force as follows:

Force = 80 tons * 1000 kg/ton * 9.8 N/kg

Now, we can substitute the values into the formula to calculate the contact area:

Contact Area = (80 tons * 1000 kg/ton * 9.8 N/kg) / 400 MPa

Let's calculate the contact area using these values.

Contact Area = (80 * 1000 * 9.8) / 400

Calculating this expression gives us the contact area between each wheel and the rail.

Please note that the search results provided by You.com did not contain relevant information for this specific calculation. Therefore, the calculation is based on the given formula and assumptions.