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    Hi,

    Please may I have some help with this centre of mass question, question number 3 in the picture. I am specifically stuck on part a. Thank you

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    (Original post by albyedw)
    Hi,

    Please may I have some help with this centre of mass question, question number 3 in the picture. I am specifically stuck on part a. Thank you

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    Can you split the lamina into two different shapes that you can easily find the centre of mass for? Then find the mass ratios of each different shape and compute the centre of mass, etc...
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    (Original post by albyedw)
    Hi,

    Please may I have some help with this centre of mass question, question number 3 in the picture. I am specifically stuck on part a. Thank you

    Name:  centre of mass.jpg
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    So if you have completed question 2, I assume you can find the centre of mass of a rectangle?
    What you can do for questions similar to question 3 is split it up. So this can be split up in to two separate rectangles. Could you find the centre of mass for the two separate rectangles?
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    In hindsight, my reply times are unhealthy...
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    am I too late yet again?
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    sorry, I posted the wrong picture haha. Here is the question I was referring to.

    https://goo.gl/photos/xqmXY6kddjcYoJ5j8
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    (Original post by albyedw)
    sorry, I posted the wrong picture haha. Here is the question I was referring to.

    https://goo.gl/photos/xqmXY6kddjcYoJ5j8
    The entire thing is a wire framework which can be split into individual rods. I suggest splitting it into 4 or 5 rods, finding each individual rod's COM and then finding the shape's COM. I'll form a table to get you started in a few.
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    (Original post by albyedw)
    ...
    Try making a table with the masses and centres of mass from AB and AE of each wire component like the one I've attached. After that, it should be pretty simple by taking moments about the axis AE!
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    (Original post by aymanzayedmannan)
    Try making a table with the masses and centres of mass from AB and AE of each wire component like the one I've attached. After that, it should be pretty simple by taking moments about the axis AE!
    Spoiler:
    Show
    Name:  12765763_10209403279584831_953078987_o.jpg
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    Thanks, that should help as I saw a solution with something similar.
 
 
 
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