Лаг1989 задача №3.45

The syringe is used for lubrication of hinge joints car, filled with kerosene for washing. The radius of the syringe piston 2 cm, 25 cm stroke. Syringe outlet radius of 2 mm. Neglecting viscosity kerosene piston friction against the wall, to determine the time for which will be replaced kerosene from a syringe, push the plunger when a constant force of 5 N.

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