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. It is calculated using the formula P = F/A, where P is pressure, F is force, and A is area.

2. How Does the Calculator Work?

The calculator uses the pressure equation:

Where:

• \( P \) — Pressure (Pascals)
• \( F \) — Force/Weight (Newtons)
• \( A \) — Area (square meters)

Explanation: The equation shows that pressure increases with greater force and decreases with larger surface area.

3. Importance of Pressure Calculation

Details: Pressure calculations are essential in engineering, physics, and many practical applications like hydraulic systems, structural design, and fluid mechanics.

4. Using the Calculator

Tips: Enter weight in Newtons and area in square meters. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are the units of pressure?
A: The SI unit is Pascal (Pa), which equals 1 Newton per square meter. Other common units include psi, bar, and atm.

Q2: How does surface area affect pressure?
A: For a given force, pressure decreases as surface area increases (spreading the force over larger area).

Q3: What's the difference between pressure and stress?
A: Pressure is external force per area, while stress is internal resistance to deformation per area.

Q4: Why do sharp knives cut better?
A: They concentrate the cutting force over a very small area, creating extremely high pressure.

Q5: How is pressure used in hydraulic systems?
A: Hydraulics use Pascal's principle - pressure applied to confined fluid is transmitted undiminished in all directions.