Newton's Universal Law of Gravitation

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. The may be defined as the force of attraction between two bodies of unit mass each and placed unit distance apart.

2. In , the gravitational constant is equal to the force attraction between two bodies of kg each and placed m apart.

3. In , the gravitational constant is equal to the force of attraction between two bodies of 1 g each and placed 1 cm apart.