Question: An object in the shape of a thin ring has radius a and mass M. A uniform sphere with mass m and radius Ris placed with its center at a distance x to the right of the center of the ring, along a line through the center of the ring, and perpendicular to its plane
What is the gravitational force that the sphere exerts on the ring-shaped object?
Express your answer in terms of the variables a, M, m, R,x, and appropriate constants.