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The radius of a body moving in a circle with constant angular velocity is given by r = 4t^2, with respect to time. What is the magnitude of the tangential velocity at t = 2s, if the angular velocity is 7 rad/s?(a) 112(b) 113(c) 56(d) 28The question was posed to me in quiz.This key question is from Non-Uniform Circular Motion in division Laws of Motion of Physics – Class 11

Answer»

Correct option is (a) 112

To EXPLAIN: The tangential velocity is given as V = ωr. At t = 2s, r = 16 UNITS. The angular velocity is 7 rad/s. Hence, the tangential velocity, v = 7 x 16 = 112 units/s.



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