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The moment of inertia, or rotational inertia, determines the torque needed for a desired angular acceleration about a rotational axis. Like inertial mass is the resistance to being linearly accelerated, the moment of inertial is the resistance to being rotationally accelerated.

2 votes
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Are mass and moment of inertia sufficient to describe the motion of a rigid body?

Context: how to build a VR controller such that swinging it is indistinguishable from swinging a sword. Is it enough that the controller matches the sword in mass and moment of inertia about the cente …
Riccardo Orlando's user avatar