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Homework Help: Calculating weight & accelleration due to gravity on other planets Help please!

  1. Nov 17, 2004 #1
    Alright, well this problem was too hard to explain, so I just decided to scan it ;).

    Here's the problem:

    I'm pretty sure I'll be able to figure out everything else once I get part (a). But I don't know where to start with this.

  2. jcsd
  3. Nov 17, 2004 #2


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    You're given:
    (radius and mass respectively).

    The acceleration at the surface of a planet canbe obtained by Newton's law of gravitation:
    since F=ma, the acceleration an object undergoes a distance R from the center is:
  4. Nov 17, 2004 #3

    Thank you very much Galileo.
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