Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Physics (https://www.askmehelpdesk.com/forumdisplay.php?f=258)
-   -   Gravitational pull (https://www.askmehelpdesk.com/showthread.php?t=142373)

  • Oct 18, 2007, 08:02 PM
    Miia
    Gravitational pull
    If the moon was sitting on the surface of the Earth, what force would be holding the two planets together.. I was told that the distance between is not zero... and to draw a diagram.. Help please
  • Oct 18, 2007, 08:28 PM
    bignaked101
    If the moon was on the surface of the earth, the force holding them together would be gravitational force, the reason for this would be because the earth pulls us down, and so does the moon.

    Here is a diagram:

    http://img.photobucket.com/albums/v6...11/G-Force.jpg
  • Oct 18, 2007, 11:51 PM
    Capuchin
    Quote:

    Originally Posted by bignaked101
    If the moon was on the surface of the earth, the force holding them together would be gravitational force, the reason for this would be because the earth pulls us down, and so does the moon.

    This diagram isn't very clear. Why is all the gravity pointing in the same direction? The moon is pulling the Earth towards it.
  • Oct 19, 2007, 05:58 AM
    ebaines
    Hello Miia. Whenever you do any calculations regarding gravity, you measure distances between objects using each object's center of gravity, which for a round object like the earth or moon is at its center. Thus if the moon was sitting on the surface of the earth the distance you use is the sum of the earth's radius plus the moon's radius.

  • All times are GMT -7. The time now is 03:19 PM.