# Hydraulics: The Physics Of Physics

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Hydraulics is a branch of science with the applications of fluid usually liquids in motion. Hydraulics deals with matters such as flow of liquid in pipes, rivers, and channels and their confinement by dams and tanks. Liquids in motion or pressure did useful work for man before Blaise Pascal and Daniel Bernoulli formulated laws for hydraulic-power technology. Pascalś law which was created in 1650 states that pressure in a liquid is transmitted equally in all directions. In the hydraulic press Pascal's law is used to increase force. A small force applied to a small piston in a small cylinder is transmitted through a tube to a large cylinder where it then presses equally against all sides of the cylinder including the large piston. Until the 19th…show more content…
Liquid is used to move objects as it is incompressible than per say air. As liquid is incompressible applying a force to one end of a hydraulic system transmits the force through the liquid to the other end.A hydraulic system is made up of a liquid-filled tube topped with two pistons. Applying a downward force on the closed system would cause the liquid to move against the opposite piston and due to liquid being incompressible the piston pushed upwards. The advantage of hydraulic tools is the concept of force multiplication. Force multiplication allows the force you apply to one piston to be multiplied, by multiplicative factor, to make a larger force acting on the second…show more content…
A liquid such as gasoline has a low viscosity as it flows easily. A viscosity of a liquid is affected by changes in temperature and pressure. A satisfactory liquid for a hydraulic system must be thick enough to give a good seal at pumps, motors, valves and etc. Any internal leakage through hydraulic system will result in, loss of pressure, instantaneous control, and pump efficiency. A liquid that is too thin will allow rapid wearing of moving parts, or of parts under a heavy load. On the other hand a liquid that that is too thick will cause the internal friction of the liquid will cause increase in the liquid’s flow resistance through clearances. This will result in pressure drops throughout the system, sluggish operation of the equipment and an increase of power consumption. The average hydraulic liquid has a relatively low