Hydraulic Jack


Pascal’s Law:  
Pascal's law or the Principle of transmission of fluid-pressure states that "pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such that the pressure ratio (initial difference) remains the same.

If F is the magnitude of the normal force on the piston and A is the surface area of a piston, then the pressure, P, of the fluid at the level to which the device has been submerged as the ratio of the force to area.
P=F/A

Since the pressure is force per unit area, it has units of N/m2 in the SI system. Another name for the SI unit of pressure is Pascal (Pa)
1 Pa=1N/M2
An important application of Pascal's law is the hydraulic jack


A force F1 is applied to a small piston of area A1. The pressure is transmitted through a fluid to a larger piston of area A2. Since the pressure is the same on both sides,
Here, P = F1/A1 = F2/A2.
Therefore, the force F2 is larger than F1 by multiplying factor A2/A1
Bolt tightening with Hydraulic Jack 





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Use:
Bolt tightening, Hydraulic brakes, Car lifts,Load lifting in industries etc.

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Q:What should be properties of hydraulic oil? 
 How a pneumatic jack differ from strand jack?



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3 comments:

  1. A pneumatic jack is a hydraulic jack that is actuated by compressed air where A strand jack is a specialized hydraulic jack that grips steel cables.

    ReplyDelete
  2. A hydraulic jack is a jack that uses a liquid to push against a piston. This is based on Pascal’s Principle.

    ReplyDelete
  3. Hydraulic jacks are distributed to different types with a difference in construction. There are Floor Jacks in which the horizontal piston presses on the short end of a bell crank, with the long arm providing the vertical motion to an elevating pad, kept level with a horizontal linkage. Floor jack

    ReplyDelete

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