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Homework Help: Did i do this question right? centripetal acc. ?

  1. Sep 18, 2008 #1
    1. The problem statement, all variables and given/known data
    Determine the rotation rate, in rev/s, required to give an astronaut a centripetal acc of 3g while in circular motion with radius 9.45 m.

    2. Relevant equations
    i did 3g=v^2/9.45 and got 1.76
    then i used T=2pie(r)/v, put in T=2pie(9.45)/1.76

    3. The attempt at a solution
    with doing what i did above i got 33.73. this doesnt seem right. 33 rev/s? that would be fast!!!
  2. jcsd
  3. Sep 18, 2008 #2


    User Avatar
    Homework Helper

    Double check your calculation for the velocity, it can't be right.

    Also, make sure you check that your units work out in your calculations. If they don't come out to what you want, you've made a mistake somewhere.
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