火灾地水力学在你的他AD: NOZZLE REACTION
Proficiency in the mental arithmetic of hydraulics will pay dividends on the foreground and in the boardroom. Third in a series.
Nozzle reaction, the force pushing a nozzle in the direction opposite the flow of water, operates on the same principle as the recoil of a gun and the thrust of a rocket engine—Newton’s Third Law of Motion, “Every action has an equal and opposite reaction.” Anyone who has held a fire hoseline has felt nozzle reaction.
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