At a speed of 50km/h, the resistance to motion of a car is 900N. Neglecting losses, calculate the power of the engine of the car at this speed. Also determine the heat equivalent of work done per minute by the engine.
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At a speed of 50km/h, the resistance to motion of a car is 900N. Neglecting losses, calculate the power of the engine of the car at this speed. Also determine the heat equivalent of work done per minute by the engine.
At a speed of 50km/h, the resistance to motion of a car is 900N. Neglecting losses, calculate the power of the engine of the car at this speed. Also determine the heat equivalent of work done per minute by the engine.
Given data:
V = 50Km/h = 50 × 5/18 = 13.88 m/sec
F = 900N
Power = ?
Q = ?
P = F.V = 900 × 13.88 = 12500 W = 12.5KW
Heat equivalent of W.D. per minute by the engine = power × 1 minute
= 12.5 KJ/sec × 60 sec = 750KJ
Q =750KJ