Gravity Practice

1. Changing Distance:    For each scenario below calculate how an initial light intensity of 144 lumens changes.
   1. The projector is moved 2x farther away from the whiteboard.
       
      
      
   2. The projector is moved 4x farther away from the whiteboard.
       
      
      
   3. The photographer moves her light 3x times closer to the subject (1/3 the beginning distance).
       
      
      
2. Changing Distance:     For each scenario below calculate how an initial gravitational attraction of 36N changes.
   1. Two objects in space move apart to 2x the distance they were.
       
      
      
   2. Two objects in space move apart to 3x the distance they were.
       
      
      
   3. Two objects in space move 3x closer together (1/3 the beginning distance).
       
      
      
3. Changing Mass:     For each scenario below calculate how an initial gravitational attraction of 36N changes
   1. Two objects in space are kept at the same distance but their total mass is doubled.
       
      
      
   2. Two objects in space are kept at the same distance but their total mass is tripled.
       
      
      
   3. Two objects in space are kept at the same distance but their total mass is 1/3 of what it was.
       
      
      
4. Changing Distance and Mass:     For each scenario below calculate how an initial gravitational attraction of 36N changes.
   1. Two objects in space move 2x closer and their total mass is doubled.
       
      
      
   2. Two objects in space move 2x closer and their total mass is 1/2 what it was.