Four tubes are set up in the lab at sea level as shown by the figure. The letter

Question

Four tubes are set up in the lab at sea level as shown by the figure. The letter under each tube corresponds the question with the same letter. 1 atm = 101300 Pa = 101300 N/m2 rwater = 1000 kg/m3

A) What is the pressure pushing down on the surface of the water in tube (a) from the outside?

B)Tube (b) is also filled with water, A1is 0.05m2and A2is 0.08m2Two pistons are placed in both ends of the tube and forces,F1andF2are exerted on the pistons so that they remain at the same height. IfF1= 20Nwhat isF2?

C)Tube (c) is again filled with water.A1andA2are the same as in part (b). Two pistons apply different forces to the water in the tube so that the water in the right side of the tube is a heighth = 0.43mabove the height of the water in the left side of the tube. IfF2= 138 Nwhat isF1?

Four tubes are set up in the lab at sea level as shown by the figure. The letter under each tube corresponds the question with the same letter. 1 atm = 101300 Pa = 101300 N/m^2 rwater = 1000 kg/m^3 A) What is the pressure pushing down on the surface of the water in tube (a) from the outside? B)Tube (b) is also filled with water, A1is 0.05m^2and A^2is 0.08m^2Two pistons are placed in both ends of the tube and forces,F1andF2are exerted on the pistons so that they remain at the same height. IfF1= 20Nwhat isF2? C)Tube (c) is again filled with water.A1andA2are the same as in part (b). Two pistons apply different forces to the water in the tube so that the water in the right side of the tube is a heighth = 0.43mabove the height of the water in the left side of the tube. IfF2= 138 Nwhat isF1?

Explanation / Answer

a) 1 atm== 101300 Pa

b]F1/A1=F2/A2
20/.05=F2/.08
F2=32 N

c]F1/A1=F2/A2+gh

F1/.05=138/.08+(1000*.43*10)

F1 = 301.25 N

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