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• Topic:

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If ar and at represent radial and tangential accelerations, the motion of a particle will be uniformly circular if

(1) ar = 0 and at = 0

(2) ar = 0 but ${a}_{t}\ne 0$

(3) ${a}_{r}\ne 0$ but at = 0

(4) ${a}_{r}\ne 0$ and ${a}_{t}\ne 0$

PMT