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Math Help - mechanics help, torque

  1. #1
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    mechanics help, torque

    A uniform rod AB of length 5m and mass 6kg is pivoted at C. where AC=1.5m . calculate the mass of the particle which must be attached at A to maintain equilibrium with the rid horizontal

    can anyone tell me if my diagram is correct? because i keep getting the wrong answer!

    thank you
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  2. #2
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    I think that your diagram is not completely correct since the weight should be placed at the middle of AB and not on C
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  3. #3
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    Okay, I have redrawn it,

    so would me equation be

     6g \times 1m  = F \times 1.5m ???
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  4. #4
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    I would say yes !
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