Particles of masses 5 kg and 10 kg are at the ends of a light rigid rod of length 1 m. How far from the 5 kg particle is their centre of mass?
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Particles of masses 5 kg and 10 kg are at the ends of a light rigid rod of length 1 m. How far from the 5 kg particle is their centre of mass?

G1 Physics · Accepted Answer

Step 1: Taking the 5 kg particle at x=0 and the 10 kg particle at x=1 m, centre-of-mass x-coordinate=(5×0+10×1)/15=2/3 m≈67 cm. Final answer: B — 67 cm.