Pascal's law states that pressure applied to a confined fluid is transmitted equally in all directions throughout the fluid. This principle explains h
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What happens to a hydraulic brake system if air bubbles enter the brake lines?
Air is compressible, unlike incompressible hydraulic fluid. Air bubbles compress under pressure instead of transmitting it fully, causing a spongy brake pedal feel and unreliable braking. Air must be completely bled from the system through bleeding valves for proper brake function.
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Can Pascal's law be used to create infinite force?
No. While the force multiplies with area ratio, the work input equals work output if we ignore losses. Pressure also has limits before fluid or system components fail. In practice, pressure relief valves limit maximum pressure to protect systems.
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Why are hydraulic systems used instead of purely mechanical levers?
Hydraulic systems allow remote transmission of force through flexible pipes, while mechanical leverage requires rigid linkages. Hydraulics handle complex force distributions to multiple points simultaneously, as in car brakes. Hydraulics provide smooth, controlled force compared to mechanical systems.
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