The driving wheel of an electric locomotive with a diameter of 1.2 m makes 300 rpm.

The driving wheel of an electric locomotive with a diameter of 1.2 m makes 300 rpm. How fast is the train driven by the electric locomotive?

To determine the value of the speed of the specified electric locomotive (train), we apply the formula: V = Π * D * ν.

Variables: D is the diameter of the driving wheel of the specified electric locomotive (D = 1.2 m); ν is the frequency of the driving wheel (ν = 300 rpm = 5 rpm).

Let’s make a calculation: V = Π * D * ν = 3.14 * 1.2 * 5 = 18.84 m / s.

Answer: The train driven by the indicated electric train has a speed of 18.84 m / s.