1. What is Gravity?

Gravity is a natural phenomenon by which all things with mass or energy are brought toward one another. On Earth, gravity gives weight to physical objects.

2. Gravity Calculation

The standard gravity calculation:

Where:

• \( F \) — Force due to gravity (N)
• \( m \) — Mass of the object (kg)
• \( g \) — Acceleration due to gravity (9.81 m/s² on Earth)

3. Importance of Gravity

Details: Gravity is fundamental to the existence of life on Earth, keeping our atmosphere in place and governing the motion of celestial bodies.

4. Using the Calculator

Tips: Enter mass in kilograms to calculate the force exerted by Earth's gravity on that mass.

5. Frequently Asked Questions (FAQ)

Q1: Why is g = 9.81 m/s²?
A: This is the average acceleration due to gravity at Earth's surface, varying slightly by location.

Q2: Does gravity change with altitude?
A: Yes, gravity decreases with altitude as you move further from Earth's center.

Q3: How does gravity differ on other planets?
A: Each planet has different gravitational acceleration based on its mass and radius.

Q4: What is microgravity?
A: The condition where objects appear weightless, experienced in free-fall or orbit.

Q5: How was gravity discovered?
A: Sir Isaac Newton formulated the law of universal gravitation in 1687.