A jet of water leaves the nozzle at the end of a hose as shown below. The area a

Question

A jet of water leaves the nozzle at the end of a hose as shown below. The area and absolute pressure inside the hose are A1 and p1 and the area and absolute pressure of the jet leaving the nozzle are A2 and p2. The absolute air pressure is p atm. A control volume for the nozzle is shown with dotted lines. The correct statement for the net forces exerted by the pressure on the control volume is: P1 A1 - p2 A2 P1 (A1 - A2) P1 A1 - P2 A2 - p atm A1 P1A1 - P2 A2 - p atm (A1 - A2) P1 A1 - P2 (A1 - A2)

Explanation / Answer

the net force on control volume is p1A1 - p2A2 - patm(A1-A2) which is option D

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