# Answer to Question #60562 in Mechanics | Relativity for Shrey Kumar Dubey

Question #60562

mass particles of 1 kg each are placed along x axis at x=1, 4, 8,......till infinity then gravitation force on a particle of mass 3kg placed on origin is?

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## Comments

Assignment Expert01.07.16, 16:55Diar Shrey Kumar Dubey, the sum in the equation is the geometric progression with the common ratio r=1/4 and scale factor a=1. Then sum = a/(1-r) = 4/3

Shrey Kumar Dubey30.06.16, 23:10Sir how to solve the summation what is the formula cause i am from a non mathematical background. kindly give an alternate method or simplify this one

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