The diameter of the locomotive wheel is 180 cm. In 2.5 minutes the wheel has made

| September 16, 2021 | education

The diameter of the locomotive wheel is 180 cm. In 2.5 minutes the wheel has made 500 revolutions. How fast the locomotive goes.

In order to determine the speed of the train, it is necessary to determine how many kilometers the train will travel in 1 hour.
To begin with, we determine how many kilometers are 1 wheel revolution. To do this, it is necessary to convert the diameter of the locomotive wheel into kilometers.
1 km = 10000 cm, respectively, 180 cm = 0.0018 km
Next, we determine how many revolutions the wheel makes in one minute and in one hour, respectively,
500 / 2.5 = 200 rpm
200 * 60 = 12000 revolutions per hour
Determine the distance that the locomotive will travel in an hour:
12000 * 0.0018 = 21.6 km
In 1 hour, the locomotive travels 21.6 km, which means its speed is 21.6 km / h.



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