(Solved): The figure shows a spherical hollow inside a lead sphere of radius R=4.1m; the surface of the hol ...

The figure shows a spherical hollow inside a lead sphere of radius $R=4.1\mathrm{m}$; the surface of the hollow passes through the center of the sphere and "touches" the right side of the sphere. The mass of the sphere before hollowing was $M=400\mathrm{kg}$. With what gravitational force does the hollowed-out lead sphere attract a small sphere of mass $m=22\mathrm{kg}$ that lies at a distance $d=18\mathrm{m}$ from the center of the lead sphere, on the straight line connecting the centers of the spheres and of the hollow? Number Units