Answer to Question #245750 in Other for Mohammed

Question #245750

A particle P moves on a circle with centre O and radius b. At a certain instant the speed of P is "\\upsilon" and its acceleration vector makes an angle "\\alpha" with PO. Find the magnitude of the acceleration vector at this instant.

Expert's answer

"|a|=\\dfrac{a_r}{\\cos \\alpha}=\\dfrac{v^2}{b\\cos \\alpha}"

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