Question

Point mass m₀ is placed at distance R/3 from the centre of a spherical shell of mass m and radius R. The gravitational force on the point mass m₀ is –

• A. $\frac { 4 \mathrm { Gmm } _ { 0 } } { \mathrm { R } ^ { 2 } }$
• B. Zero
• C. $\frac { 9 \mathrm { Gmm } _ { 0 } } { \mathrm { R } ^ { 2 } }$
• D. None of these

Answer 1

Answer: (B)

Zero

Answer 2

Gravitational field is zero inside the shell

So force will be zero.