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Asked in NEET 2023 · Relation between linear and angular motion
Idea: angular velocity ω⃗ is an axial vector; it lies along the axis of rotation with the sense given by the right-hand rule.
Angular acceleration is α⃗=(dω⃗)/(dt).
For a body turning in a fixed plane the axis does not move, so (dω⃗)/(dt) points along that same axis.
Hence α⃗ lies along the axis of rotation.
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