1. What is Density from Specific Weight?

Density is a fundamental physical property of matter, defined as mass per unit volume. This calculator determines density from specific weight (weight per unit volume) by accounting for gravitational acceleration.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Specific Weight — Weight per unit volume (N/m³)
• g — Acceleration due to gravity (9.81 m/s² on Earth)

Explanation: The formula converts weight-based measurement (specific weight) to mass-based measurement (density) by dividing by gravitational acceleration.

3. Importance of Density Calculation

Details: Density is crucial in fluid mechanics, material science, and engineering applications. It helps determine buoyancy, material properties, and fluid behavior under different conditions.

4. Using the Calculator

Tips: Enter specific weight in N/m³ and gravitational acceleration in m/s² (9.81 m/s² for Earth). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between density and specific weight?
A: Density is mass per unit volume (kg/m³), while specific weight is weight per unit volume (N/m³). They're related through gravity.

Q2: Why is g typically 9.81 m/s²?
A: This is the standard gravitational acceleration at Earth's surface. It varies slightly by location (9.78-9.83 m/s²).

Q3: Can I use this for other planets?
A: Yes, just input the appropriate g value for that planet (e.g., 3.71 m/s² for Mars).

Q4: What are typical specific weight values?
A: Water has ~9810 N/m³ at 4°C on Earth. Mercury has ~133,100 N/m³.

Q5: How precise should my inputs be?
A: For most applications, 2-4 significant figures are sufficient unless high precision is required.