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October 24, 2014

Homework Help: college physics

Posted by Jeff on Sunday, October 11, 2009 at 11:12pm.

In the figure below, two point particles are fixed on an x axis separated by a distance d. Particle A has mass mA and particle B has mass 2.00mA. A third particle C, of mass 90.0mA, is to be placed on the x axis and near particles A and B. In terms of distance d, at what x coordinate should C be placed so that the net gravitational force on particle A from particles B and C is zero?

I know the f=gm1m2/r^2 equation but if the net force of particle A is 0 then im getting r=0.

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