Roller / Skate / Jacking Push Force
Steady and breakaway push force to move a load on rollers or skates, the grade component, and the skate count by capacity. Verify the floor's own capacity.
Formula and source
roll_force = load x roll_coef x cos(incline); grade_force = load x sin(incline); push_steady = roll_force + grade_force; push_breakaway = push_steady x 1.5; skates = ceil(load / skate_cap).
Standard machinery-moving practice (rolling resistance + grade) by name; first-principles.
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