A wheel makes $2$ revolutions per second. Find its angular velocity.

Question

Accepted Answer

$4\pi$ rad s$^{-1}$. One revolution is $2\pi$ radians, so $\omega = 2\pi f = 2\pi 	imes 2 = 4\pi$ rad s$^{-1}$ (about 12.6 rad s$^{-1}$). Forgetting the $2\pi$ leaves the frequency, 2, which is not an angular velocity.

Answer

A) $4\pi$ rad s$^{-1}$

Answer

B) $\pi$ rad s$^{-1}$

Answer

C) $2$ rad s$^{-1}$

Answer

D) $2\pi$ rad s$^{-1}$

A wheel makes $2$ revolutions per second. Find its angular velocity.

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