Power generation by gravity is not feasible and it is impossible to perform a circular motion to drive a generator. When an object falls from a high point to a low point, gravity is generated due to the free falling motion of Earth's gravity. Then, when it reaches the lowest point and returns to the highest point, another energy is needed to push it. if it is equipped with a flywheel, it cannot guarantee its long-lasting operation. The energy will gradually degrade until it stops.
So is there a way to make gravity generate electricity? There must be other conditions, that is, how to use the free energy to bring the gravitational device that propels the electricity back to a high point.
Typically, the turbines of hydroelectric power plants have the shape of a turbine, just like the propellers of an airplane or the blades of an electric fan, but they have more blades, are smoother, and are enclosed around them, so the energy conversion efficiency is higher. For specific production, you can imitate the structure inside the tap water meter. It has this type of structure and is very effective.