1. What is Work Done by Gravity?

Work done by gravity is the energy transferred when an object is moved against the gravitational force. It's calculated as the product of mass, gravitational acceleration, and height.

2. How Does the Calculator Work?

The calculator uses the work done equation:

Where:

• \( W \) — Work done (Joules)
• \( m \) — Mass of the object (kg)
• \( g \) — Gravitational acceleration (9.81 m/s² on Earth)
• \( h \) — Height change (m)

Explanation: The equation shows that work done is directly proportional to mass, gravitational acceleration, and the height through which the object is moved.

3. Importance of Work Calculation

Details: Calculating work done is essential in physics and engineering for understanding energy requirements, mechanical systems, and potential energy changes.

4. Using the Calculator

Tips: Enter mass in kilograms, height in meters, and gravitational acceleration (default is Earth's gravity 9.81 m/s²). All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are the units of work?
A: The SI unit of work is the Joule (J), which equals 1 kg·m²/s².

Q2: Does this equation work for any direction?
A: This calculates work done against gravity. For horizontal movement where height doesn't change, work done by gravity is zero.

Q3: What value should I use for g on other planets?
A: Use different g values: Moon (1.62 m/s²), Mars (3.71 m/s²), etc. The calculator lets you input any g value.

Q4: How does this relate to potential energy?
A: The work done equals the change in gravitational potential energy (ΔPE = mgh).

Q5: What if the object is moving at an angle?
A: Only the vertical component (height change) matters for work done against gravity.