Question

паровоз на горизотальном участке пути длиной 600 м развивает постоянную силу тяги 150кН скорость поезда возрастат при этом с 36 км/ч до54км/ч масса поезда 1000т.определить коэффицент трения

Answer 1

Calculation of Friction Coefficient

To determine the friction coefficient, we can use the equation:

Friction Force = Friction Coefficient × Normal Force

In this case, the normal force is equal to the weight of the train, which can be calculated as:

Normal Force = Mass × Gravity

Given that the mass of the train is 1000 tons and the acceleration due to gravity is approximately 9.8 m/s^2, we can calculate the normal force:

Normal Force = 1000 tons × 9.8 m/s^2

Now, let's calculate the friction force. The force of traction is given as 150 kN. As the train is moving on a horizontal track, the friction force will be equal to the force of traction:

Friction Force = 150 kN

Finally, we can calculate the friction coefficient:

Friction Coefficient = Friction Force / Normal Force

Let's plug in the values and calculate the friction coefficient.