Question

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

• A. Infinite
• B. Zero
• C. \( \frac{-G m_1 m_2}{r^2} \)
• D. \( \frac{G m_1 m_2}{r^2} \)

Hint:

Inside a uniform spherical shell, a particle experiences no net gravitational force because of the symmetrical distribution of mass.

Answer 1

The Correct Option is B

Step 1: {Apply shell theorem} 
The shell theorem states that a uniform spherical shell of mass exerts zero net gravitational force on a particle inside it. 
Step 2: {Explain force cancellation} 
Forces from opposite sides of the shell cancel out due to symmetry, leaving: Net gravitational force = 0.
Thus, the correct answer is zero.