Задача 11098.

The syringe, used to refill the bearings of the airplane, was filled for kerosene washing. The radius of the syringe piston R = 2 cm, the stroke of the piston L = 5 cm. The radius of the syringe outlet r = 2 mm. Neglecting the viscosity of kerosene and the friction of the piston against the wall, determine the time for which kerosene will flow out of the syringe, if the piston is pressed with a constant force F = 5 H. The density of kerosene is assumed equal to 800 kg / m ^ 3.

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