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Illustration Velocity of a body at two different points on the circular orbit

<span>Velocity of a body at two different points on the circular orbit</span>
Velocity of a body at two different points on the circular path
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A body that is at two different locations on a circular path with radius \(r\). At one time, the body is at point \(S_1\) and has orbital velocity \(\boldsymbol{v}_1\) there. After a short period of time, the body has moved further along the circular path and is now at the point \(S_2\). At this point it has a different orbital velocity \(\boldsymbol{v}_2\), because the direction of the velocity has changed. The body has traveled the angle \(\delta \varphi\).