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Homework Help: Trebechet Computations

  1. May 19, 2010 #1
    1. The problem statement, all variables and given/known data
    Mass of bucket and 63 pennies - 182 gm
    Mass of projectile - 1 gm
    Mass of arm - 3 gm

    the total length of the arm is 24.6 cm

    Compute the oment of inertia of the trebechet

    2. Relevant equations
    I = Ei mi * ri^2


    3. The attempt at a solution

    how do i start this equation?
     
  2. jcsd
  3. May 19, 2010 #2

    tiny-tim

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    (do you mean I = ∑i mi * ri2 ?)

    Just put the various masses and distances into the formula …

    what do you get? :smile:
     
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