1. Two negative masses would repel because of their negative inertial masses . 2. Why are inertial mass and gravitational mass the same thing? 3. Can'inertial mass'be explained here-there are links to'inertia'and'mass'but not'inertial mass '. 4. Can'inertial mass 'be explained here-there are links to'inertia'and'mass'but not'inertial mass '. 5. The centrifugal force is calculated by Newton's laws of motion and depends on inertial mass . 6. :: Inertial mass is the mass related to F = ma, one of Newton's laws. 7. What is the relationship between gravitational and inertial mass ? 8. :Sounds like you are talking about a substance with a different gravitational mass than inertial mass . 9. No physical difference has been found between gravitational and inertial mass in a given inertial frame. 10. :As a relay completely turns off and has mechanical inertial mass that shifts the delay for oscillating.