public new static Force InteractionForce(Particle A, Particle B)
{
Displacement AtoB = B.position - A.position;
Scalar distance = AtoB.Magnitude();
Scalar magnitudeOfForce = G * (A.mass * B.mass) / (distance * distance);
return(new Force(magnitudeOfForce * AtoB.Direction()));
}
/// <summary>
/// The force this spring would apply if stretched/compressed to the given Displacement
/// </summary>
/// <param name="xToY"></param>
/// <returns>The force this spring would apply if stretched/compressed to the given Displacement</returns>
public Force InteractionForce(Displacement xToY)
{
// <summary> returns force on x due to y </summary>
if (xToY.units != DerivedUnits.Length)
{
throw new UnitMismatchException();
}
Scalar magnitude = SpringRate * (xToY.Magnitude() - RestLength);
return(new Force(magnitude * xToY.Direction()));
}