A sphere of mass $M$ and radius $R_{2}$ has a concentric cavity of radius $R_{1}$ as shown in figure. The force $F$ exerted by the sphere on a particle of mass m located at a distance r from the centre of sphere varies as $(0 \leq r \leq \infty)$

Question

Dr. Abubacker · Accepted Answer

(b) $F = 0$ when $0 \leq r \leq R_{1}$
Because intensity is zero inside the cavity
$F$ increase when $R_{1} \leq r \leq R_{2}$
$F \propto \frac{1}{r^{2}}$ when $r > R_{2}$

Q. A sphere of mass $M$ and radius $R_{2}$ has a concentric cavity of radius $R_{1}$ as shown in figure. The force $F$ exerted by the sphere on a particle of mass m located at a distance r from the centre of sphere varies as $(0 \leq r \leq \infty)$

Explanation

Reviewed by Dr. Abubacker

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