5. Now investigate the effect of varying masses upon the gravitational force between moon and planet. Use the sliders to alter the masses and observe the effect upon the force. Use your observations to answer the following statements: If the mass of the moon is ... a. ... increased by a factor of 2, then the Fgrav is increased by a factor of 2. b. ... increased by a factor of 3, then the Fgrav is increased by a factor of _4_ Separation Distance Force (fictional units) 2 . Rplanet 3 . Rplanet 4 . Rplanet 5 . Rplanet 6 . Rplanet 7 . Rplanet 8 . Rplanet 9 . Rplanet 10 . Rplanet 11 . Rplanet 12 . Rplanet c. ... decreased by a factor of 4, then the Fgrav is decreased by a factor of 4 d. Discuss some evidence (data values) and reasoning in which you explain the logic behind your answers to parts a-c