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Homework Help: Uniform Circular motion problem

  1. Apr 22, 2010 #1
    Uniform Circular motion problem!!!

    1. The problem statement, all variables and given/known data
    A 235 m tall tower is built on the equator. Due to the rotation of the earth, how much faster does a point at the top of the tower move than a point at the bottom (in m/s)?


    2. Relevant equations
    v=w*r (w is omega)



    3. The attempt at a solution
    So it didnt give me the radius of the earth but the previous problem said it was 6400 km so i used that and converted 365 days to seconds and got 31536000. Next i tried to find the velocity of the earth in m/s so 6400km= 6400000 m. 6400000m/31536000s. i get 0.2029426687. i do the same thing but at 235 to the radius and i get 0.2029426687. I next found the difference and get 7.45*10-6. Its not right i dont know what im doing wrong...
     
  2. jcsd
  3. Apr 22, 2010 #2
    Re: Uniform Circular motion problem!!!

    365 days for the Earth to rotate!!??:surprised
     
  4. Apr 22, 2010 #3
    Re: Uniform Circular motion problem!!!

    oops im retarded...
     
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