a wheel of diameter in 14 cm makes 3000 revolution per min find speed in m/sec.
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D= 14 hence r=7. C=2 pi r. = 2 [22/7] [7]. =44. 44.3.1000 = 132000cm. I.e 1320m Now S=D/T. = 1320/60 = 22m/s. HENCE THE ANS IS 22m/s
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