What moment of inertia means
What moment of inertia means
Moment of inertia is the rotational equivalent of mass. It measures how hard it is to change an object's angular motion about a chosen axis.
Step-by-step lessons on AQA A Level Physics Concept of moment of inertia (A-level only). Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.