1. What is Force of Gravity?

Definition: The force of gravity is the force exerted by the gravitational field of a massive object (like Earth) on another object.

Purpose: This calculator helps determine the gravitational force acting on an object near Earth's surface.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: The mass of an object is multiplied by the gravitational acceleration to calculate the force exerted by gravity.

3. Importance of Gravity Force Calculation

Details: Understanding gravitational force is essential in physics, engineering, and everyday applications like weight measurement and structural design.

4. Using the Calculator

Tips: Enter the mass in kilograms and gravitational acceleration (default 9.81 m/s² for Earth). All values must be > 0.

5. Frequently Asked Questions (FAQ)

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

Q2: How does this relate to weight?
A: Weight is the force of gravity on an object, calculated exactly this way (W = m × g).

Q3: When would I use a different value for g?
A: For calculations on other planets (e.g., 1.62 m/s² on the Moon, 3.71 m/s² on Mars).

Q4: What if my mass is in pounds?
A: First convert pounds to kilograms (1 lb ≈ 0.4536 kg) before using this calculator.

Q5: Does this include air resistance?
A: No, this calculates only the gravitational force without considering other forces like air resistance.