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Physics · GRAVITATION
हिन्दीA particle of mass \( m \) is placed inside a uniform solid sphere of mass \( M_E \) and radius \( R_E \) at a distance \( r = \frac{R_E}{4} \) from the centre. The gravitational force acting on the particle is:
Correct answer · Option 4
\( \frac{G M_E m}{4 R_E^2} \)
Explanation
Inside the sphere, the force is \( F(r) = \frac{G M_E m}{R_E^3} r \). Substituting \( r = \frac{R_E}{4} \) gives \( F = \frac{G M_E m}{4 R_E^2} \).
