Two objects of masses 10 kg and 20 kg are attached to the ends of a 10 m rigid rod of negligible mass. Find the distance of the centre of mass from the 10 kg mass.
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Two objects of masses 10 kg and 20 kg are attached to the ends of a 10 m rigid rod of negligible mass. Find the distance of the centre of mass from the 10 kg mass.

G1 Physics · Accepted Answer

Step 1: Place the 10 kg mass at x=0 and the 20 kg mass at x=10 m. Step 2: Centre of mass x=(10×0+20×10)/(10+20)=200/30=20/3 m. Final answer: A — 20/3 m.