Recent content by toony12362

Does this mean the force is just F= F_actual_mass_with_radius_b - F_negative_mass_with_radius_a?

Sorry! Here is a sketch. I am assumning if we have a regular disk then the gravitational force can be modeled by the force equation in the diagram! Now if we have a disk with an empty interior of radius b like this figure Would the only thing that change in my equation would now be the...

Homework Statement [/B]Hello, I have derived the equation for the gravitational force for a disk to be 2Ggm/a^2(1-x/sqrt(a^2 - x^2) when an object is added on top of the system. My question is would the force still be somewhat similar if the disk now had a small hollow of radius c...