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Masses of 2 kg each are placed at the corners B and A of a rectangular plate ABCD as shown in the figure. A mass of 8 kg has to be placed on the plate so that the centre of mass of the system should be the centre O. Then the mass should be placed at:
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Correct option is A
xcm = m1x1+m2x2+m3x3m1+m2+m3⇒0 = 2(-2)+2(-2)+8x22+2+8⇒x3 = 1 mSimilar Questions
The mass of a uniform ladder of length 5 m is 20 kg. A person of mass 60 kg stands on the ladder at a height of 2 m from the bottom. The position of centre of mass of the ladder and man from the bottom nearly is
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