Two concentric spherical shells have masses M1 and M2 and radii R1 and R2 (R1<R2). What is the force exerted by this system on a particle of mass m if it is at a distance (R1+R2)2 from the centre?

Two concentric spherical shells have masses M1 and M2 and radii R1 and

1.	Two concentric spherical shells have masses M1 and M2 and radii R1 and R2 (R1<R2). What is the force exerted by this system on a particle of mass m if it is at a distance (R1+R2)2 from the centre?
Answer» Two concentric spherical shells have masses $M_{1}$ and $M_{2}$ and radii $R_{1}$ and $R_{2}$ $(R_{1} < R_{2})$ . What is the force exerted by this system on a particle of mass $m$ if it is at a distance $\frac{(R_{1} + R_{2})}{2}$ from the centre?

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Two concentric spherical shells have masses M1 and M2 and radii R1 and R2 (R1&lt;R2). What is the force exerted by this system on a particle of mass m if it is at a distance (R1+R2)2 from the centre?

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Two concentric spherical shells have masses M1 and M2 and radii R1 and R2 (R1<R2). What is the force exerted by this system on a particle of mass m if it is at a distance (R1+R2)2 from the centre?