Hydraulics are force multipliers that use the incompressibility of liquids to transmit pressure equally in all directions. This principle is demonstrated with a balloon example. Hydraulic systems apply a small force to one piston to generate a larger force on another, as shown in a calculation example. These systems are used in car brakes, jacks, and aircraft landing gear, making tasks like changing tires easier.

What is the principle behind hydraulics that allows pressure to be transmitted equally in all directions?

What is the equation used in hydraulics to relate pressure, force, and area?

Explain how a hydraulic system can produce a larger force from a smaller force.

List some applications of hydraulic systems mentioned in the text.

Why is it important to have hydraulics in tasks such as changing a tire?