An electric locomotive under the action of a traction force of 250 kN moves at a constant
| June 25, 2021 | education
An electric locomotive under the action of a traction force of 250 kN moves at a constant speed of 54 km/ h Determine its power.
To solve the problem, it is necessary to translate kN into N, and km / h into m / s.
F = 250 kN = 250 * 1000 = 250,000 N;
V = 54 km / h = 54000/3600 = 15 m / s.
To find power, you need to multiply the force by the speed
N = F * V = 250000 * 15 = 3750000 W = 3750 kW.
Answer: the power of an electric locomotive is 3,750,000 W (3,750 kW).
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