Two objects exert a gravitational force of 3 N on one another when they are 10 m apart. What would that force be if the distance between the two objects were reduced to 5 m?
A. 1.5 N
B. 6 N
C. 12 N
D. 24 N

Question

Two objects exert a gravitational force of 3 N on one another when they are 10 m apart. What would that force be if the distance between the two objects were reduced to 5 m?
  A. 1.5 N
  B. 6 N
  C. 12 N
  D. 24 N

anonymous · Answer

Is it B?

espex · Answer

Gravitational force is inversely proportional to the square of the distance between the two masses. So from 10m to 5m is a reduction of 1/2, the inverse is 2, squared is 4. So 4 times the original force of 3N is 12N.

espex · Answer

And this is actually a physics question, not chem.

anonymous · Answer

Thank you so much for helping me...sorry..I didn't realize it toward now that it is physics...sorry..sorry!

espex · Answer

You're welcome. :)

anonymous · Answer

If you don't mind, can you also help me on the other question? Please!