ASVAB (Armed Services Vocational Aptitude Battery)Mechanical Comprehension (MC)Easy
A hydraulic system in a car's brake lines transmits pressure. If a force of 200 N is applied to a piston with an area of 0.01 m², what pressure is exerted on the fluid?
- A20,000 Pa
- B200 Pa
- C2,000 Pa
- D200,000 Pa
Show answer & explanationAnswer & explanation
Correct answer: A. 20,000 Pa
Pressure (P) is defined as force (F) per unit area (A). The formula is P = F / A. Given F = 200 N and A = 0.01 m², P = 200 N / 0.01 m² = 20,000 Pascals (Pa).
Why the other options are wrong
- B. Incorrect, likely a division error.
- C. Incorrect, miscalculation.
- D. Incorrect, likely multiplied instead of divided.
Pressure Definition
Pressure is the amount of force applied perpendicular to the surface of an object per unit area over which that force is distributed.
- Formula: P = F / A.
- Units: Pascals (Pa), where 1 Pa = 1 N/m².
- Important in fluid mechanics and structural engineering.
Memory trick: Pressure is Force 'over' Area.