Q75 / 100 · BITSAT 2024 (Memory Based Paper 1) · Physics

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

  • A
    infinite
  • Correct answer
    B
    zero
  • C
    $\frac{-G m_1 m_2}{r^2}$
  • D
    $\frac{\mathrm{Gm}_1 \mathrm{~m}_2}{\mathrm{r}^2}$

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.

Hence, the correct answer is option: 'B'.

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