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I need help please?

  1. Mar 14, 2009 #1
    1. The problem statement, all variables and given/known data

    Masses and dimension



    M (Kg) 1.8152 + 0.0001
    -
    M bar 1.8627+ 0.0001
    -
    h (m) 0.490+ 0.005
    -
    l (m) 0.604+ 0.005
    -
    b (m) 0.02000+ 0.00005
    -




    Oscillations

    Trial T ( for 50 oscillations) T0 ( for 25 oscillations) T bar ( for 25 oscillations)
    1
    ---------- 80.44+1.5 s
    ----------------------------- 154.37+1.5 s
    ------------------------------------------------------------------------------------------------------------------ 103.65+1.5 s
    -
    2
    ---------- 79.99+1.5 s
    ------------------------------ 148.18+1.5 s
    ------------------------------------------------------------------------------------------------------------------ 104.00+1.5 s
    -
    3
    ---------- 81.93+1.5 s
    ------------------------------------ ------ 154.06+1.5 s
    ---------------------------------------------------------------------------------------------------------- 96.25+1.5 s
    -
    Average
    ---------- 80.74+ 1.5 s
    ------------------------------------ 152.87+ 1.5 s
    ------------------------------------------------------------------------------------------------------------------ 101.3+ 1.5 s
    -



    g = ( 9.27 + ????? ) m/ s2


    2. Relevant equations

    Hello, My questions is Derive the general uncertanity formula of "g" ( in tearms of measurable quantities)
    you need these equations
    T= 2 π (square root of ( I/Mgh)
    g= 4 ( π square) ( I/Mh) T square
    I= I0 + M (h square)
    I0= I bar ( T0/Tbar)square
    Ibar= (M bar/ 12) ( L square+ b square)
     
    Last edited: Mar 14, 2009
  2. jcsd
  3. Mar 14, 2009 #2
    please help me
     
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