5.1: Rotation Basics - Physics LibreTexts
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WEBDec 30, 2020 · α = dω dt = θ¨ (5.1.7) or in three dimensions, where ω is a vector: α = dω dt (5.1.8) Note that when α is parallel to ω, it simply represents a change in the rotation rate (i.e., a speeding up/slowing down of the rotation), but when it is not, it also represents a change of the plane of rotation.
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