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Hydraulic machines are machinery and tools that use liquid fluid power to do simple work. Heavy equipment is a common example.
Hydraulic Machines:

  • Liquids are generally incompressible (they cannot be compressed).
  • When liquid is trapped (closed in a container) and pressure is exerted, this pressure is transmitted to all parts of the liquid.
  • The force (or pressure) is exerted on small area, but it results on a large area with much force.
  • Thus the small force applied on a car brake results large force on 4 wheels.

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