A uniform square plate has four identical small squares at the corners numbered 1,2,3,4. Axes X-X′ and Y-Y′ pass through the original centre O.
Physics · Center of maas , Momentum and Collision · center of mass and question based on it
A uniform square plate has four identical small squares at the corners numbered 1,2,3,4. Axes X-X′ and Y-Y′ pass through the original centre O.

Sub-question 1
Where is the centre of mass originally?
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Sub-question 2
Where is the centre of mass after square 1 is removed?
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Sub-question 3
Where is the centre of mass after squares 1 and 2 are removed?
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