Nothing in this universe with billions of galaxies, and over trillions of solar systems is working mechanically (any force), Our universe is a well complete entity and it is working under duality system,
Read all of my paper for more detail, and if you have any questions let me know. .
The effect of any force on any object is the same as if the object were subject to gravity, because gravity describes the spacetime geometry and any force produces spacetime curvature. That was understood by Einstein in 1915, it doesn't make sense pretending it's not known. It's remarkable that this, still, confuses people. F=ma makes sense in the non-relativistic (v
Stam Nicolis. What do you mean by space and spacetime?
Newton has used both time and space in his mechanics. For examples, v=s/t, where s is displacement. a = (u - v)t, where t, u, v, and a denote time, initial velocity, final velocity, and acceleration respectively. E = (mv)/2 and P = mgh.
‘Centripetal force’ represents the effort that compels a moving object to move in a curved path. ‘Centripetal force’ is an imaginary entity, assumed action of which compensates the outward displacement of a body moving incurved path. This is essential due to the assumption that a body moving in a curved path is directed along the tangent to the curvature. See: http://vixra.org/pdf/1012.0040v2.pdf
Gravity is entirely different. The entire space, outside the most basic 3D matter-particles, is filled with an all-encompassing universal medium, structured by quanta of matter. Due to its structure, the universal medium is inherently under compression. A 3D matter-particle, in the universal medium, experiences compression from the universal medium. This property of the universal medium is gravitation. The magnitude of gravitation corresponds to the extent of the universal medium that exerts the pressure. Extent of universal medium between two 3D matter-particles is always less than the extents of universal medium on their outer sides. Hence higher gravitational actions on the outer sides tend to move the 3D matter-particles toward each other. This tendency is understood as gravitational attraction or gravity. Gravitational attraction (gravity) is the resultant (relatively a minor by-product) of separate gravitational actions on two 3D matter-particles by the universal medium. See: https://www.matterdoc.info