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**relation between**

**r ,ω**and θ for rotation around fixed axis.[tex] \frac{d\textbf {r}}{dt} = \textbf {ω} [/tex]

[tex] \frac{dθ}{dt} = ω [/tex]

[tex] \lvert\frac{d\textbf {r}}{dt}\rvert = \frac{dθ}{dt} [/tex]

bold means vector. Is this right?

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