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MHT CET Physics question

PhysicsLaws of MotionMHT CET

A particle at rest starts moving with a constant angular acceleration of 4 rad/s² in a circular path. At what time 't' the magnitude of its centripetal acceleration and tangential acceleration will be equal? [MHT-CET 2020, MHT-CET 2020]

Answer: (C)

Solution

and ; equating gives

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Question ID VK-041012