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Find centripetal acceleration

  1. Nov 21, 2013 #1
    The radius of the earth's orbit about the sun is about 1.5x10^11m. The mass of the earth is 5.98x^10^24kg



    Equations:
    ac= v^2/r
    ac=4∏^2/r
    v=2∏r/T


    I could not figure out what to do so i could not attempt it
     
    Last edited: Nov 21, 2013
  2. jcsd
  3. Nov 21, 2013 #2
    Centripetal acceleration is ##a_c=\frac{v^2}{R}##.
    Since ##v=\frac{2\pi R}{T}##, where ##T## is the period, so
    ##a_c=\frac{4\pi^2 R}{T^2}##.
     
  4. Nov 21, 2013 #3
    Your equations, except the first one, are incorrect. Find the correct equations first.
     
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