1. What is the Force of Gravity Equation?

The force of gravity equation (F = m × g) calculates the gravitational force exerted on an object with mass (m) due to acceleration from gravity (g). On Earth, standard gravity is approximately 9.8 m/s².

2. How Does the Calculator Work?

The calculator uses the force of gravity equation:

Where:

• \( F \) — Force of gravity (newtons, N)
• \( m \) — Mass of the object (kilograms, kg)
• \( g \) — Acceleration due to gravity (m/s²)

Explanation: The equation shows the direct proportional relationship between mass and gravitational force.

3. Importance of Force Calculation

Details: Calculating gravitational force is fundamental in physics and engineering for understanding weight, designing structures, and analyzing motion under gravity.

4. Using the Calculator

Tips: Enter mass in kilograms and gravity in m/s² (9.8 m/s² for Earth). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between mass and weight?
A: Mass is an intrinsic property of matter (kg), while weight is the force (N) exerted on that mass by gravity.

Q2: Does gravity vary on Earth?
A: Yes, gravity varies slightly (about 0.7%) due to Earth's rotation, altitude, and geology, but 9.8 m/s² is standard for calculations.

Q3: How would I calculate this on other planets?
A: Use the same equation but substitute the planet's gravity (e.g., 3.7 m/s² for Mars, 24.8 m/s² for Jupiter).

Q4: Why is gravity 9.8 m/s² on Earth?
A: This value comes from Earth's mass (5.97×10²⁴ kg) and radius (6.371×10⁶ m) in Newton's universal gravitation equation.

Q5: How does gravity affect falling objects?
A: All objects accelerate at the same rate (g) in a vacuum, but air resistance affects real-world falling objects differently.