The aircraft is towed by two gliders at a constant speed. The flight of an airplane and gliders occurs in the same horizontal plane, and the angles between the flight line and the towing cables are the same and equal to a = 30°. The tension force of each tow rope is T1 = T2 = T = 500 N. The force of air resistance to the movement of the aircraft at a given speed is F, = 400 N. Find the thrust force of the engine.

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