I understood what was happened. Modern physics use static model for forces which applied to an object. This is the same model if calculate loads in civil engineering.
If you this logic for physics problem "a rolling body along incline" then object has two reaction forces. In static mode each of this forces equal to gravity force projection on incline. However, solution of this problem use dynamic model where rotational and translational motion is a sum of two motion and sum of forces which conducted certain type of motion equal to net force(i.e. gravity force projection on incline)
The physics problem for rotational and translational motion in free move doesn't use dynamic model and substitute physics process by static model where torque as add-on(not part of it) for force in linear direction. This is mistake. The model should be the same as modern physics use for rolling objects on surface
