<?xml version="1.0" encoding="UTF-8"?>
<game>
  <title>Advanced Gravity Simulator</title>
  <slug>advanced-gravity-simulator</slug>
  <short-desc>An interactive physics lab where you can drop objects on different planets, study free fall, and see the effects of air resistance.</short-desc>
  <categories>
    <category>Educational</category>
    <category>Simulation</category>
    <category>Physics</category>
  </categories>
  <keywords>gravity simulator, physics game, educational game, free fall, air resistance, science experiment, planet simulation, html5 game, acceleration, g-force</keywords>
  <content>
# About Advanced Gravity Simulator

Advanced Gravity Simulator is an interactive educational game that transforms your screen into a virtual physics laboratory. It's designed for students, teachers, and anyone curious about the laws of motion. The core purpose of the simulator is to allow you to conduct controlled experiments to understand the principles of gravity, acceleration, and the often-overlooked force of air resistance in a clear and visual way.

The gameplay revolves around setting up and observing a simple "drop" experiment. You begin by choosing a celestial body—Earth, the Moon, Mars, Jupiter—or even creating a custom environment with your own specified gravity. From there, you set the drop height and decide whether to factor in the effects of air resistance. Once you start the simulation, you can watch the object fall in real-time alongside a timer and a height ruler.

The true learning happens after the object hits the ground. A detailed results panel appears, showing you the total fall time. The simulator then uses the simple kinematic equation `g = 2h / t²` to calculate the gravitational acceleration from your experiment's data. By comparing this result to the planet's true 'g' value, you can directly observe how factors like air resistance cause a discrepancy, providing a practical lesson on the difference between idealized physics and real-world application.

## How to Play

1.  **Set Your Location:** Use the "Planet" dropdown menu to select Earth, Moon, Mars, Jupiter, or "Custom" to enter your own gravity value.
2.  **Choose the Height:** Adjust the "Height (h)" slider to set the altitude from which the object will be dropped. The display will update in real-time.
3.  **Toggle Air Resistance:** Check the "Enable Air Resistance" box to simulate the effect of an atmosphere. Uncheck it for a pure vacuum free-fall experiment.
4.  **Start the Experiment:** Click the "Drop Object" button to begin the simulation.
5.  **Observe:** Watch the object fall. An on-screen display will show the elapsed time.
6.  **Analyze Results:** After the object lands, a pop-up window will display a full report, including fall time, your calculated 'g' value, the planet's actual 'g' value, and the accuracy of your result.
7.  **Reset and Repeat:** Click the "Reset" button to return the object to its starting position and try new parameters.

## Features

- **Multi-Planet Environments:** Simulate free fall on four different celestial bodies (Earth, Moon, Mars, Jupiter), each with its own pre-set gravity and atmospheric density.
- **Custom Physics Engine:** Go beyond the solar system by selecting the "Custom" option to input any gravitational value you desire.
- **Realistic Air Resistance:** Enable a sophisticated drag model that calculates resistance based on velocity, atmospheric density, and object properties, providing a more realistic simulation.
- **Instant Data Analysis:** Receive a detailed post-experiment report that calculates 'g' from your results and compares it against the theoretical value, complete with an accuracy percentage.
- **Interactive Visuals:** The simulation is enhanced with a dynamic ruler for scale, a smooth motion trail for the falling object, and a satisfying impact effect.

## Controls

All game interactions are performed using a mouse click or screen tap on the user interface elements:

- **Dropdown Menus:** Select the planet.
- **Sliders:** Drag to adjust the height.
- **Checkboxes:** Click to toggle settings like air resistance.
- **Buttons:** Click "Drop" and "Reset" to control the experiment.

## Tips & Strategies

- **Isolate Variables:** To best understand a specific concept, only change one variable at a time. For instance, run two tests from the same height on Earth—one with air resistance and one without—to clearly see its impact on the fall time.
- **Compare Planets:** Drop the object from the same height on the Moon (low gravity, no air) and Jupiter (high gravity, dense air). Observe the massive difference in acceleration and fall time.
- **Accuracy and Air Resistance:** Note how the calculated 'g' is almost perfectly accurate when air resistance is off. When it's on, the accuracy decreases because the simple `g = 2h / t²` formula doesn't account for drag. This is a key takeaway!
  </content>
  <faq>
    <question>How do I save my progress in the game?</question>
    <answer>This is a session-based simulator. There is no progress to save. Simply set up a new experiment whenever you wish to play.</answer>
    
    <question>Can I play this game on mobile devices?</question>
    <answer>Yes, this game is fully compatible with mobile browsers.</answer>
    
    <question>Is this game free to play?</question>
    <answer>Yes, the game is completely free to play in your browser.</answer>
  </faq>
  <specifications>
    <multiplayer>false</multiplayer>
  </specifications>
</game>

An interactive game created with AI assistance

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Advanced Gravity Simulator

Advanced Gravity Simulator