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Find centre of mass of a lamina.

  1. Jan 19, 2014 #1
    A lamina comprises a uniform rectangular card ABCD where AB = 10 cm and BC = 12 cm
    with a circle of radius 3 cm cut out. The centre of the circle is 7 cm from AB and 4 cm from AD.

    How would I find the centre of mass for this lamina? I know to find the centre of mass for a uniform lamina we can integrate or simple find the centre of the shape's diagonals. Also, how would I find it if the circle was added on top instead? I'm sorry I don't have much of an idea how to do these.
     
  2. jcsd
  3. Jan 19, 2014 #2

    SteamKing

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    You can use the principle of moments to calculate the c.o.m. of the lamina.
     
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