The car, moving evenly at a speed of 30 m / s, develops a traction force of 1.2 kN. Find the engine power.

Given: speed v = 30 m / s.

Traction force F = 1.2 kN = 1200 N, (1 kN = 1000 N).

Find: Power N.

Solution:

Power = mechanical work / time.

N = A / t; A = F * S; therefore, N = F * S / t = F * v.

N = 30 * 1200 = 36000 (W) = 36 (kW).

The engine power with a uniform movement of the car is 36 kW.



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