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Homework Help: Gravity Formulas

  1. Nov 27, 2011 #1
    Gravity Formulas urgent

    I have to find the gravity acting upon an object, given an ANGLE. What would be the simplest formulae to use, I forgot my wrk sheet at school. I just need the simplest formulae, i found some but these are hard for me, we didn't use these (I'm in grade 11);

    http://upload.wikimedia.org/wikipedia/en/math/8/c/a/8cac81164940cc01c636c5c4d2592d48.png


    http://upload.wikimedia.org/wikipedia/en/math/2/0/7/20746f41ac5995514c82e04f7e171b80.png
     
  2. jcsd
  3. Nov 27, 2011 #2
    Re: Gravity Formulas urgent

    wait i found this would it work: a = (g) sinx
     
  4. Nov 27, 2011 #3

    PeterO

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    Homework Helper

    Re: Gravity Formulas urgent

    Perhaps you have not written the question very well, but answer the following:

    You have a mass of 100kg. What is the force of gravity acting on you [magnitude and direction] when you are standing still, on the Earth where g = 9.8?

    What is the force of gravity acting on you while you jump on a trampoline?

    What is the force of gravity on acting you when you are in a lift?

    What is the force of gravity on acting you when you are riding a roller coaster?
     
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