In uniform circular motion, angular velocity (𝒘) is a vector quantity and …
In uniform circular motion, angular velocity (𝒘) is a vector quantity and is equal to the angular displacement (Δ𝚹, a vector quantity) divided by the change in time (Δ𝐭). Speed is equal to the arc length traveled (S) divided by the change in time (Δ𝐭), which is also equal to |𝒘|R. And arc length (S) is equal to the absolute value of the angular displacement (|Δ𝚹|) times the radius (R).
David explains how a mass can have angular momentum even if it …
David explains how a mass can have angular momentum even if it is traveling along a straight line. Then David shows how to solve the conservation of angular momentum problem where a ball hits a rod which can rotate. Created by David SantoPietro.
A worked example finding the change in centripetal acceleration from the change …
A worked example finding the change in centripetal acceleration from the change in linear speed, and an example finding the change in centripetal acceleration from the change in radius.
A worked example finding the change in the period from the change …
A worked example finding the change in the period from the change in angular velocity, and an example finding the change in frequency from the change in angular velocity.
In this video David shows how to relate the angular displacement to …
In this video David shows how to relate the angular displacement to the arc length, angular velocity to the speed, and angular acceleration to the tangential acceleration. Created by David SantoPietro.
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