$$\rightleftharpoonup{xx}$$
$$\longleftharp{xx}$$,
$$\longrightharp{xx}$$,
Have you ever seen a car lifted high up effortlessly at a repair shop? That’s a hydraulic system doing its job.
A hydraulic system uses liquid because it is almost incompressible.
When you push on liquid in one part, the pressure spreads evenly through the fluid—it’s like squeezing a water balloon.
So how does it actually work?
Picture two pistons connected by a tube filled with oil. One piston is small, and the other is large.
When you press down on the small piston, the pressure travels through the oil to the larger one.
Pressure is force divided by area. The larger the area, the greater the total force you get—even with the same pressure.
Because the large piston has more surface area, the same pressure creates a much bigger force. That’s how pressing a button can lift an entire car.
You can find hydraulic systems in many places—car brakes, forklifts, excavators, and even airplane controls. They multiply force, making tough jobs easier and safer.
