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Statement of a problem № 3110

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Particles of masses m, 2m, 3m ... nm are collinear at distances L , 2L , 3L ... nL , respectively, from a fixed point. Locate the centre of mass from the fixed point.

Solution:
Particles of  masses m,  2m,  3m ... nm  are  collinear at  distances  L ,  2L ,

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