Physics - Mechanics - Gravitation - Newton's law of universal gravitation - Universal Gravitation

A 5-step lesson. Step 1: 'Newton's Law of Universal Gravitation: Every mass attracts every other mass. F = Gm₁m₂/r²'. G = 6.67×10⁻¹¹ N·m²/kg² (gravitational constant - very small!). Step 2: 'The force is proportional to both masses (double either mass → double the force) and inversely proportional t