1. What is Mass from Weight Calculation?

The mass from weight calculation determines an object's mass based on its weight and the gravitational acceleration acting upon it. This is based on Newton's second law: weight = mass × gravity.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Mass \) — Object's mass (kg)
• \( Weight \) — Object's weight (N)
• \( g \) — Gravitational acceleration (m/s²)

Explanation: The formula rearranges Newton's second law to solve for mass when weight is known.

3. Importance of Mass Calculation

Details: Calculating mass from weight is fundamental in physics and engineering applications where direct mass measurement isn't possible, but weight can be measured.

4. Using the Calculator

Tips: Enter weight in Newtons and gravitational acceleration in m/s² (9.81 m/s² on Earth's surface). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between mass and weight?
A: Mass is a measure of matter (constant), while weight is the force of gravity acting on that mass (varies with gravity).

Q2: Why is Earth's gravity 9.81 m/s²?
A: This is the average gravitational acceleration at Earth's surface, varying slightly by location (9.78-9.83 m/s²).

Q3: How would mass change on the Moon?
A: Mass stays the same, but weight would be about 1/6 of Earth's due to Moon's lower gravity (1.62 m/s²).

Q4: Can I use this for objects in free fall?
A: No, in free fall the apparent weight would be zero, making this calculation invalid.

Q5: What units should I use?
A: Use Newtons for weight (kg·m/s²) and kilograms for mass. Ensure consistent units.