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Standard XII

Physics

Gravitational Field Due to a Disc

A solid spher...

Question

A solid sphere of uniform density and mass M has radius $4$ m. Its centre is at the origin of the coordinate system. Two spheres of radii $1$ m are taken out so that their centres are at $P (0, - 2, 0)$ and $Q (0, 2, 0)$ , respectively. This leaves two spherical cavities. What is the gravitational field at the origin of the coordinate axes?

\frac{31 G M}{1024}

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\frac{G m}{1024}

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31 G M

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Zero

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Solution

The correct option is D Zero
Due to symmetry,force will be equal from all sides and hence Ans $0$

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The correct option is D ZeroDue to symmetry,force will be equal from all sides and hence Ans 0

The correct option is D Zero
Due to symmetry,force will be equal from all sides and hence Ans $0$