A solid sphere of radius r/2 is cut out of a solid sphere of radius r such that the spherical cavity so formed touches the surface on one side and the centre of the sphere on the other side, as shown . The initial mass of the solid sphere was m. If a particle of mass m is placed at a distance 2.5r from the centre of the cavity, then what is the gravitational attraction on the mass m ?

A solid sphere of radius r/2 is cut out of a solid sphere of radius r

1.	A solid sphere of radius r/2 is cut out of a solid sphere of radius r such that the spherical cavity so formed touches the surface on one side and the centre of the sphere on the other side, as shown . The initial mass of the solid sphere was m. If a particle of mass m is placed at a distance 2.5r from the centre of the cavity, then what is the gravitational attraction on the mass m ?
Answer» GRAVITATIONAL FORCE of ATTRACTION

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