Physics Astronomy

Gravity

• Quantified by Isaac Newton
  • universal law of gravitation
• Universal attraction among all bodies everywhere
• The strength of an object's gravitational pull is directly proportional to its mass
  • More massive --> stronger pull
  • Strength decreases as the separation between two masses increases

Universal Gravitational Constant

• $6.67 \times 10^{-11} m^3 / (kg s^2)$