In Figure 18.3c, suppose you push the left piston rightward with a force of magnitude \(10 \mathrm{~N}\). (For now, ignore normal forces.)

(a) To keep the water in the cylinder at rest, what force must you exert on the (identical) right piston?

(b) How does the force \(\vec{F}_{\text {wr }}^{c}\) exerted by the water on the right piston compare to the force \(\vec{F}_{\text {pl }}^{c}\) exerted by you on the left piston?

Transcribed Image Text:

Figure 18.3 All fluids resist bulk stresses, but liquids don't compress much, whereas gases are easily compressed. (a) Liquids oppose compression liquid (b) Gases compress more easily gas Push on piston... causes liquid to exert opposing force on piston. Push on piston... ...compresses gas ... until opposing force exerted by gas on piston equals push. (c) Fluids exert forces on all surfaces they contact fluid