Kinematics and forces

Newton's law of gravitation

F = Gm1m2/r2

G gravitational constant, m1, m2 masses, r center-to-center distance

Watch forInverse square: triple the distance, one-ninth the force. Measure r from the planet's center.

Apply it · 2 questions

  1. Gravitational force when distance triplesMotion, forces, and energy · set 2 · easy
  2. Weight at an altitude of one Earth radiusMotion, forces, and energy · set 2 · medium