A spherical shell of inner diameter R and outer diameter 3R has a uniform density ρ. What is the magnitude of the gravitational acceleration a distance 2R from the center of the spherical shell?
A)15πGρR/7
B)32πGρR/5
C)25πGρR/12
D)7πGρR/6
E)7πGρR/3

Question

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The Answer of A spherical shell of inner diameter R and outer diameter 3R has a uniform density ρ. What is the magnitude of the gravitational acceleration a distance 2R from the center of the spherical shell?
A)15πGρR/7
B)32πGρR/5
C)25πGρR/12
D)7πGρR/6
E)7πGρR/3

A Spherical Shell of Inner Diameter R and Outer Diameter