A solid sphere of uniform density and radius R applies a gravitational force of attraction equal to F1 on a particle placed at a distance 2R from the centre of the sphere. A spherical cavity of radius R2 is now made in the sphere as shown in the figure. The sphere with the cavity now applies a gravitational force F2 on the same particle. The ratio F1F2 is
Why this question: To make the student familier with use of the principle of superposition when the mass of body is changed. This can be applied for any kind of body shape. |