Gravity¶
Gravity is a fundamental interaction which causes mutual attraction between all things that have mass.
Contents:
- Radial motion
- Average potential energy via average kinetic energy
- Potential energy of radial planetary motion
- Radial kinetic energy plus potential energy is constant
- Semimajor axis via Kepler’s constant and total energy
- Semiminor axis of elliptical orbit via orbit parameters
- Total energy is negative average kinetic energy
- Gravity (Vector)
- Angle of rotation during gravitational maneuver
- Area rate of change is proportional to angular momentum
- Corrected planet period squared is proportional to cube of semimajor axis
- Easterly deviation from plumbline of falling bodies
- Eccentricity of orbit
- First escape speed
- Free fall acceleration from height
- Gravitational potential energy
- Gravitational radius of massive body
- Gravitational force from mass and distance
- Kepler’s constant via attracting body mass
- Semimajor axis of orbit via mass and speed
- Maximum angle of rotation during gravitational maneuver
- Maximum height of body thrown at angle to horizon
- Time of flight of a projectile via initial velocity
- Time of flight of a projectile via maximum height
- Orbital speed from semimajor axis and planet mass
- Planet period squared is proportional to cube of semimajor axis
- Radius of geostationary orbit
- Horizontal displacement of projectile
- Second escape velocity
- Southerly deviation from plumbline of falling bodies
- Third cosmic speed from orbital and second cosmic speed