From a solid sphere of mass \( M \) and radius \( R \), a spherical portion of radius \( \frac{R...
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From a solid sphere of mass \( M \) and radius \( R \), a spherical portion of radius \( \frac{R}{2} \) is removed, as shown in the figure. Taking gravitational potential \( V=0 \) at \( r=\infty \), the potential at the centre of the cavity thus formed is \( (G= \) gravitational constant)
(a) \( \frac{-2 G M}{3 R} \)
(b) \( \frac{-2 G M}{R} \)
(c) \( \frac{-G M}{2 R} \)
(d) \( \frac{-G M}{R} \)
\( \mathrm{P} \)
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