Gravitation Question 308

Question: For a particle inside a uniform spherical shell, the gravitational force on the particle is

Options:

A) Infinite

B) zero

C) $ [\frac{-Gm_{1}m_{2}}{r^{2}}] $

D) $ [\frac{Gm_{1}m_{2}}{r^{2}}] $

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Answer:

Correct Answer: B

Solution:

  • Various regions of spherical shell attract the point mass inside it in various directions. These forces cancel each other completely. Therefore the gravitational force on the particle is zero.