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Old Apr 13th 2013, 06:38 AM   #1
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Stability Issue Help

Can anyone help to explain why the possible centre of gravity is at position D as in the attached photo?
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Old Apr 13th 2013, 08:26 AM   #2
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Originally Posted by Alexis87 View Post
Can anyone help to explain why the possible centre of gravity is at position D as in the attached photo?
They're just trying to mess with you. D is not a possible answer.

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Old Oct 10th 2013, 07:38 AM   #3
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Originally Posted by phyoy View Post
Do not understand
There is far more mass on the right than on the left. D could not possibly be an answer.

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Old Oct 30th 2013, 02:54 PM   #4
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My answer would be C.
A different term for centre of gravity is centre of mass, they are just different names for the same thing.
Using this alternative name might make things a bit clearer.
Adding extra mass below the original centre of mass must mean that the new centre of mass will be below the old centre of mass.
This means that A and B are ruled out.
Why not D is less obvious,
The centre of mass of the disc must be within the disc.
The addition of the disc cannot move the combined centre of gravity further than this point.
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