Force - A push or pull acting upon a body. In a hydraulic cylinder, it is the product of the pressure on the fluid, multiplied by the effective area of the cylinder piston. It is measured in pounds or tons. Friction - The resistance to fluid flow in a hy- draulic system.
temperature increase The pressure of a contained sample of gas can be increased by increasing its temperature, or by decreasing its volume, or by injecting additional mas â¦ s into it.
When the volume is increased while the mass remains, the density increases. One way to increase volume is by reducing the temperature of objects especially gases. This is how â¦ air conditioning and fridges work, cooling the air which will move down as denser objects sink.