Determine the work done by the electric locomotive in 2 hours of uniform movement of the train

Determine the work done by the electric locomotive in 2 hours of uniform movement of the train at an average speed of 54 km / h, if the traction force is 50 kN.

These tasks: t (duration of uniform movement of the train) = 2 hours (in SI t = 7200 s); V (average speed of an electric locomotive (train)) = 54 km / h (in SI V = 15 m / s); F (pulling force) = 50 kN (50 * 10 ^ 3 N).

We calculate the work that the electric locomotive performed with uniform movement of the train by the formula: A = N * t = F * V * t.

Let’s perform the calculation: A = 50 * 10 ^ 3 * 15 * 7200 = 5.4 * 10 ^ 9 J (5.4 GJ).

Answer: The electric locomotive performed work at 5.4 GJ.