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  4. Two objects of mass 10 kg and 20 kg respectively are connected to the two ends of a rigid rod of length 10 m with negligible mass. The distance of the center of mass of the system from the 10 kg mass is :

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Q. Two objects of mass $10\, kg$ and $20 \, kg$ respectively are connected to the two ends of a rigid rod of length $10\, m$ with negligible mass. The distance of the center of mass of the system from the $10\, kg$ mass is :

NEETNEET 2022System of Particles and Rotational Motion

Solution:

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$X _{ CM }=\frac{20 \times 10}{20+10}=\frac{20}{3} m$