The Law Of Conservation

The first three symmetries lead to three conservation laws: Momentum, Energy, and angular momentum.
To keep the arguments simple, we also assume that the particle’s invariant mass “m” (rest mass) does not change during the motion to be studied.
Invariance is the same as Symmetry, so if the mass is invariant or symmetrical about a center axis of rotation it stays stationary.
Within the laws of physics, we introduce Eccentric mass load about a center axis of rotation, and physical experimental proof of many systems moving in a direction that is constant.