Problem 7 4 When n number of particles of masses m 2m 3m nm are at distances x 1 x 4 x3 9 xn n units respectively from origin on

Question

Problem 7 4 When n number of particles of masses m 2m 3m nm are at distances x 1 x 4 x3 9 xn n units respectively from origin on the x axis then find the distance of their centre of mass from origin m 1 2m 4 3m 9 nm Sol x subtracting the above equations Xcm Xcm Ax cm m x x m x x m m m 4x m 4x m m

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