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Homework Help: Apparent weight - ferris wheel

  1. Feb 23, 2010 #1
    1. The problem statement, all variables and given/known data

    So if a person's apparent weight at the top of a ferris wheel is 0N find the time it takes the ferris wheel to make on rotation.

    Then find the apparent weight of a person at the bottom of the ferris wheel for the same person on the same ferris wheel?


    2. Relevant equations

    a=v2/r

    v=2pi(r)/T

    3. The attempt at a solution

    So to find the time i did the following.

    a=9.8 m/s2
    r=50m

    9.8=v2/50
    v=22.1 m/s

    22.1=2pi(50)/T

    T=14.2 seconds

    Now i am not sure what to do to find the apparent weight of the person when he or she is at the bottom of the ferris wheel. I know i have all the information i need i just am having a little trouble starting :(

    I know....

    N - mg = m v^2 / r

    N = mg + m v^2 / r

    but i am not sure how to use these to find the apparent weight....

    Can someone give me a little push please :)

    Thank you
     
  2. jcsd
  3. Feb 23, 2010 #2
    never mind i got it. It was for the same passenger as used in earlier parts of the problem so i already know his true weight and therefore his mass which allowed me to find his apparent weight at the bottom :)
     
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