Modified gravity and inertia: Mach’s principle, MOND, origin of inertia, gravitational constant
The lack of a phenomenological explanation of Modified Newtonian Dynamics and its falling short in galaxy clusters suggest that MOND is an approximation of a more fundamental theory of modified gravity or inertia. There are strong indications that point towards a Machian origin of MOND, providing an explanation for the apparent dark matter effects in galaxies. The origin of inertia and a derivation of the gravitational constant are also related to these problems in gravitation.