// create a new simulation
var simulation = new Simulation();

// create some point masses
var pointMass1 = new PointMass(mass: 1.0f);
var pointMass2 = new PointMass(mass: 2.0f);

simulation.Add(pointMass1);
simulation.Add(pointMass2);

// create a spring between these point masses
simulation.Add(new Spring(pointMass1, pointMass2));

// add some global forces to the simulation
simulation.Add(new ColoumbForce());                       // point masses are attracted to one another
simulation.Add(new OriginAttractionForce(stiffness: 10)); // point masses move towards the origin
simulation.Add(new FlowDownwardForce(magnitude: 100));    // gravity

// set up a loop
while (true)
{
    // compute a time step
    simulation.Update(dt: 0.01f);

    // use the resulting positions somehow
    Console.WriteLine($"PointMass1 at {pointMass1.Position}, PointMass2 at {pointMass2.Position}");
}