About this simulation

Experiment with a simplified gravitational system and observe how mass, initial velocity, and gravitational strength influence motion. The model illustrates the equations rather than reproducing the Solar System exactly.

Newton’s law

For two point masses, F = Gm₁m₂/r². Gravity is attractive and acts along the line joining the masses.

Why velocity matters

An orbit results from gravity continually changing an object’s direction while the object retains forward velocity.

Controls

The gravitational-strength and spawn-mass values are simulation parameters and are not necessarily SI quantities.

Model limitations

The simulation uses simplified units, numerical integration, finite-size bodies, and a fixed central body in its preset.

Suggested investigation

Change one parameter at a time and compare trajectories. Explain changes using force, acceleration, mass, and velocity.