Question

Определите массу железнодорожного состава, который мжет везти тепловоз с ускорением 0,1м/с2, если он развивает максимальное тяговое усилие 300 кН, а сила сопротивления его движению равна 100кН

Answer 1

Второй закон Ньютона. Сразу в проекции
Fтяг-Fсопр=ma
300000-100000=0.1m;
200000=0.1m;
m=2000000=2*$10^{6}$ кг
Ответ:2*$10^{6}$ кг

Answer 2

Calculation of the Mass of the Train

To determine the mass of the train, we can use Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, the force acting on the train is the difference between the maximum tractive force and the resistance force.

The formula for calculating the mass of the train is:

mass = (maximum tractive force - resistance force) / acceleration

Given: - Maximum tractive force = 300 kN - Resistance force = 100 kN - Acceleration = 0.1 m/s^2

Substituting the given values into the formula, we get:

mass = (300 kN - 100 kN) / 0.1 m/s^2

Calculating the numerator:

300 kN - 100 kN = 200 kN

Converting kN to kg (1 kN = 1000 kg), we have:

200 kN = 200,000 kg

Now, substituting the values into the formula:

mass = 200,000 kg / 0.1 m/s^2

Calculating the denominator:

200,000 kg / 0.1 m/s^2 = 2,000,000 kg

Therefore, the mass of the train is 2,000,000 kg.