The gravitational field, due to the 'left over part' of a uniform sphere (from which a part as shown, has been 'removed out'), at a very far off point, P , located as shown, would be (nearly) :\\
(1) $\frac { 5 } { 6 } \frac { G M } { x ^ { 2 } }$\\
(2) $\frac { 8 } { 9 } \frac { G M } { x ^ { 2 } }$\\
(3) $\frac { 7 } { 8 } \frac { G M } { x ^ { 2 } }$\\
(4) $\frac { 6 } { 7 } \frac { G M } { x ^ { 2 } }$