The density of a sphere is given by ρ(r)= C/r. The sphere has a radius of 6.0 m and a mass of 1.3*1011 kg. A small diameter hole is drilled into the sphere toward the center of the sphere to a depth of 2.00 m below the sphere's surface. A small mass is dropped from the surface into the hole. If the only force the small mass feels is the force of gravity due to the sphere, Decide the speed of the small mass as it strikes the bottom of the hole.