1. What is Pressure?

Pressure is defined as the force applied perpendicular to the surface of an object per unit area over which that force is distributed. The SI unit for pressure is the pascal (Pa), which is equal to one newton per square meter (N/m²).

2. How Does the Calculator Work?

The calculator uses the pressure equation:

Where:

• \( p \) — Pressure in pascals (Pa)
• \( F \) — Force in newtons (N)
• \( A \) — Area in square meters (m²)

Explanation: Pressure increases with greater force or smaller area over which the force is applied.

3. Importance of Pressure Calculation

Details: Pressure calculations are essential in engineering, physics, meteorology, and many other fields. They help determine structural integrity, fluid dynamics, and atmospheric conditions.

4. Using the Calculator

Tips: Enter force in newtons and area in square meters. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are common units for pressure?
A: Besides pascals, common units include atmospheres (atm), millimeters of mercury (mmHg), pounds per square inch (psi), and bars.

Q2: How does pressure relate to fluid dynamics?
A: Pressure differences drive fluid flow according to Bernoulli's principle and other fluid dynamics equations.

Q3: What is gauge pressure vs absolute pressure?
A: Gauge pressure is relative to atmospheric pressure, while absolute pressure includes atmospheric pressure.

Q4: How does pressure change with depth in fluids?
A: Pressure increases with depth due to the weight of the fluid above (P = ρgh).

Q5: What is the difference between stress and pressure?
A: Pressure is external force per area, while stress is internal resistance to deformation per area.