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Ferris Wheel

  1. Nov 3, 2008 #1
    A 40kg child takes a ride on a Ferris Wheel that rotates 4 times each minute and has a radius of 9m.

    I firgured that angular velocity is .419 rads/sec
    I figured that tangential velocity is 3.77m/sec
    I figured that centripetal acceleration is 1.58m/sec^2

    Questions
    a)What force in N does the seat exert on the child at the lowest point of the Ferris wheel?

    b)What force in N does the seat exert on the child at the highest point of the Ferrish Wheel? Keep in mind that radially inward in the positive direction
     
  2. jcsd
  3. Nov 3, 2008 #2

    LowlyPion

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    Draw a force diagram at the bottom and the top.

    F = m*a - so whatever acceleration the mass is experiencing should translate to the seat shouldn't it?
     
  4. Nov 3, 2008 #3
    i figure for the bottom its
    N= mg +mv^2
    -------------
    r

    and the top would be

    N= mg - mv^2
    ----------------
    r
     
  5. Nov 3, 2008 #4

    LowlyPion

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    I think that's right, but your post displays unclearly.

    N = m*g + m*v2/r

    So if that is your first one and similarly for the second ... yes.
     
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