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Math Help - How do i find the centre of gravity

  1. #1
    prs
    prs is offline
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    How do i find the centre of gravity

    How do i find  the centre of gravity-img045.jpgcould somebody help me with this, each of the boxes has a mass of 200g each, i have searched the web and there are plenty of results but a lot seem to be pointing to particles of mass like planets or aircraft wings, i have found an example with a see saw is this something similar,

    thaks for any help,,p,
    Last edited by mr fantastic; January 10th 2011 at 02:10 PM. Reason: Title.
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  2. #2
    Senior Member
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    You can treat the boxes as point masses at their center *on the surface* of the table.
    The reason is that using the definition of torque, it does not matter how the boxes are placed vertically. Only their horizontal position matters, so you can essentially shift them up/down at your convenience.
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