Physics - Gravitation Question with Solution | TestHub

In a solid sphere of mass$M$and radius$R$, a spherical cavity of radius$\frac{R}{2}$is made, such that the centre of cavity is at a distance$\frac{R}{2}$from the centre of the sphere. A point mass$m$is placed inside the cavity, at a distance$\frac{R}{4}$from the centre of the sphere. The gravitational pull between the sphere and the point mass$m$is