
Explain why water flowing out of a small hole at the bottom of a wide tank results in a backward force on the tank.
When a fluid is flowing out of a small hole in a vessel, it acquires a large velocity and hence possesses large momentum. Since, no external force is acting on the system, a backward velocity must be attained by the vessel (according to law of conservation of momentum) is experienced by the vessel.
Dr. Bbosa Science
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