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  4. A point on the periphery of rotating disc has its acceleration vector making on angle 30o with velocity vector, then the ratio of magnitude of centripetal acceleration to tangential acceleration is

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Q. A point on the periphery of rotating disc has its acceleration vector making on angle $30^{o}$ with velocity vector, then the ratio of magnitude of centripetal acceleration to tangential acceleration is

NTA AbhyasNTA Abhyas 2020Laws of Motion

Solution:

image
From the diagram, $\frac{a_{N}}{a_{t}}=tan \theta =tan ⁡ 30^{o}$