Physics | Question in description | Question 30

One model for a certain planet has a core of radius R and mass M surrounded by an outer shell of inner radius R, outer radius 2R, and mass 4M. If M = 8.57 × 1024 kg and R = 8.60 × 106 m, what is the gravitational acceleration of a particle at points

(a) R and

(b) 3R from the center of the planet?

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