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Calculate the velocity of the disc if the angular speed is 5 rad/s and radius is 2 m.(a) 25 m/s(b) 20 m/s(c) 25 m/s(d) 10 m/sI had been asked this question in a national level competition.This interesting question is from Starting in section Starting of Electric Drives

Answer»

Right choice is (d) 10 m/s

Explanation: The velocity of the DISC can be calculated using the relation V=ω×r. The velocity is the vector PRODUCT of angular speed and RADIUS. V = ω×r = 5×2 = 10 m/s.



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