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Can any celestal body or anything rotate at speed of 90 degree

  1. Feb 25, 2010 #1
    can any celestal body or anything rotate at speed of 90 degree per second with a radius of
    of more than or equal to 3 X 10 ^ 8 metre ?
    is it possible?
     
  2. jcsd
  3. Feb 26, 2010 #2
    faster than speed of light ?

    ok guys
    suppose a body or something with radius of more than or equal to 3X10^8 meters is rotating at speed of 90 degree /sec : then a point at crust of top layer will travel at speed of 3√3 X10^8 m/s (using pythagoras theoram ) so have i done anything wrong please correct me ?
    thank you
     

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  4. Feb 26, 2010 #3

    mathman

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    Science Advisor
    Gold Member

    Re: faster than speed of light ?

    Arithmetic may be correct, but it would be physically impossible.
     
  5. Feb 26, 2010 #4

    berkeman

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    Staff: Mentor

    Re: diameter?

    (moderator note -- two threads combined)
     
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