Two concentric uniform thin spherical shells have masses
Chapter , Problem 73(choose chapter or problem)
Two concentric uniform thin spherical shells have masses and and radii a and 2a, as in Figure 11-26. What is the magnitude of the gravitational force on a point particle of mass m (not shown) located (a) a distance 3a from the center of the shells? (b) a distance 1.9a from the center of the shells? (c) a distance 0.9a from the center of the shells?
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