Question

Поезд массой 500 т двигается с скоростью 57.6 км/ч определить силу торможения если тормозной путь поезда 64 м

Answer 1

Посчитай сам, вроде все логично

Answer 2

Calculation of Braking Force

To determine the braking force exerted on a train, we can use the equation:

Braking force = (mass of the train) × (deceleration)

Given: - Mass of the train = 500 t (or 500,000 kg) - Speed of the train = 57.6 km/h - Braking distance = 64 m

First, we need to convert the speed from km/h to m/s: - Speed = 57.6 km/h = 57.6 × (1000 m / 3600 s) = 16 m/s

Next, we can calculate the deceleration using the formula: - Deceleration = (final velocity^2 - initial velocity^2) / (2 × distance)

Since the train is coming to a stop, the final velocity is 0 m/s. The initial velocity is 16 m/s, and the distance is 64 m.

Plugging in the values: - Deceleration = (0^2 - 16^2) / (2 × 64) = -256 / 128 = -2 m/s^2

Now, we can calculate the braking force: - Braking force = (mass of the train) × (deceleration) - Braking force = 500,000 kg × -2 m/s^2 = -1,000,000 N

Therefore, the braking force exerted on the train is 1,000,000 N.

Please note that the negative sign indicates that the force is acting in the opposite direction of the train's motion, which is necessary to decelerate the train.