If three balls (all weighing 2.0kg) are lined in a row, what is the magnitude of the net gravitational force on mass A due to masses B and C in the figure. B is 10cm from A, and C is 50 cm from A (and of course C is 40 cm from B)(adsbygoogle = window.adsbygoogle || []).push({});

(here's a 'diagram')

(A)----(B)----------------------------C

I've been using the equation G*(m1m2/Rsq) and been adding the gravitational pull from a & b and a & c but for some reason that's wrong. So where do I need to fine tune my equation?

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# Gravitational pull on two objects

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