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Physics
Classical Physics
Mechanics
Confusion about angular speed and angular acceleration
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[QUOTE="jack action, post: 5685322, member: 240508"] [B]Frequency[/B] is the number of occurrences of a repeating event per unit time. ([URL='https://en.wikipedia.org/wiki/Frequency']source[/URL]) So, in essence, frequency is the measure of [I]something[/I] per unit time. It is often the measure of turns (or revolutions) per unit time because the best way to having something repeating itself is to go in a circle. Since one turn is also an angular displacement of ##2\pi## radians then, in such a case, the frequency can be related to an angular speed. But you cannot use the unit [I]rad/s[/I] and call it a frequency, it must be [I]turn/s[/I] absolutely (something that can be counted instead of measured). This is why we always do the transformation ##\omega = 2\pi f## instead of just doing a unit conversion. [B]Angular velocity[/B] is defined as the rate of change of angular displacement and is a vector quantity ([URL='https://en.wikipedia.org/wiki/Angular_velocity']source[/URL]). A vector has a direction and a magnitude. [B]Angular speed[/B] is the magnitude of that vector. [/QUOTE]
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Physics
Classical Physics
Mechanics
Confusion about angular speed and angular acceleration
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