FTP, identify this concept in physics that is considered the rotational analog of mass and is generally designated I.
The common factor in rotational kinetic energy and angular momentum, it can be found using the parallel axis and perpendicular axis theorems by accounting for the mass distribution.  When multiplied by the angular acceleration, it yields the net torque in a system and forms an integral part in rotational motion.  FTP, identify this concept in physics that is considered the rotational analog of mass and is generally designated I.
The common factor in rotational kinetic energy and angular momentum, it can be found using the parallel axis and perpendicular axis theorems by accounting for the mass distribution.  
moment of inertia