hydrualic lift and Hydraulic brakes
Answers
HLO MATE HERE IS UR ANSWER.
❤. HYDRAULIC LIFT ❤
⭐. In a hydraulic lift two pistons are separated by the space filled with a liquid.
⭐. A piston of small cross section A1 is used to exert a force F1 directly on the liquid .
⭐. According to pascals law, the pressure is transmitted through the liquid to larger piston of area A2.
⭐. The upward force exerted on larger piston is
F2 = PA2 = F1A2/A1.
==> F2/F1 = A2/A1.
since A2 > A1 , therefore F2>F1.
⭐. Thus a small force F1 applied on the smaller piston can be used to exert a large force F2 on the bigger piston.
⭐. This is the principle of a hydrauluc machine.
❤. HYDRAULIC BRAKES ❤
⭐. When a small force is applied on tge pedal with our foot the master piston moves inside the master cylinder.
⭐. Then the pressure caused is transmitted through the brake oil to act on a piston of larger area.
⭐. A large force acts on the piston and is pushed down expanding the brake shoes against brake lining.
⭐. In this way a small force on the pedal produces a large retarding force on the wheel.