Hydraulic System

A hydraulic drive system is a drive or transmission system that uses pressurized hydraulic fluid to drive hydraulic machinery. The term hydrostatic refers to the transfer of energy from flow and pressure, not from the kinetic energy of the flow. The above shows a hydraulic system where the piston area A 2 A_2 is 10 10 times larger than the piston area A 1 A_1 . If we denote the magnitudes of the forces acting on cylinder 1 1 and cylinder 2 2 as F 1 F_1 and F 2 , F_2, respectively, what is the ratio F 1 : F 2 ? F_1:F_2?

1 : 10 1:\sqrt{10} 1 : 1 1:1 1 : 10 1:10 10 : 1 10:1

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5 solutions

Discussions for this problem are now closed

Captain Awesome
Mar 9, 2014

Pascal's Principle states that pressure is transmitted undiminished in an enclosed static fluid. That is, considering that the fluid is incompressible. Thus, we have:

P 1 = P 2 P_1 = P_2

F 1 A 1 = F 2 A 2 \dfrac{F_1}{A_1} = \dfrac{F_2}{A_2}

F 1 F 2 = A 1 A 2 = A 1 10 A 1 \dfrac{F_1}{F_2} = \dfrac{A_1}{A_2} = \dfrac{A_1}{10\cdot{A_1}}

Therefore:

F 1 F 2 = 1 10 \dfrac{F_1}{F_2} = \boxed{\dfrac{1}{10}}

Pressure in the system remains constant. Pressure is nothing but the ratio of force to area. So (F1/A1)=(F2/A2). Therfore (F1/F2)=(A1/A2) He has given A2=10*A1 A1/A2= 1/10. Therfore F1/F2=1/10

Sathi Nagi Reddy - 7 years, 3 months ago

Pressure in the system remains constant. Pressure is nothing but the ratio of force to area. So (F1/A1)=(F2/A2). Therfore (F1/F2)=(A1/A2) He has given A2=10*A1 A1/A2= 1/10. Therfore F1/F2=1/10

Mehrab Ali - 7 years, 2 months ago
Krishna J
Apr 3, 2014

Just apply Pascal's Law of undiminished pressure according to which if pressure is applied to one part of a fluid, it is transmitted equally and undiminished to all parts of the fluid P1=P2 F1/A1=F2/A2 => F1/F2=A1/A2 =>F1/F2=1/10

Sohaib Ahmad
Mar 27, 2014

p1=f1/a1

p2=f2/a1(10)

p1/p2=f1/a1/f2/a1(10)

p1/p2=f1/f2=1/10

f1/f2=1/10 or 1:10

Sayan Karmakar
Mar 26, 2014

in the hydrolic press (f1/f2)=(a1/a2) and according to the question 10a1=a2 so (f1/f2)=(a1/10a1) so (f1/f2 )= 1/10

Vishnu Paliath
Feb 28, 2014

F1 x A1 = F2 x A2 at the same level of the fluid as derived from Pascal's Pressure distribution law. Hence, the ratio of force will be inverse of the ratio of Areas.

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