Answers

2016-05-26T21:20:21+08:00
     80rev/min  =    80/60 rev/ sec
                        =   8/6 rev/sec
   to find the angular speed,  just  multiply   2π radians by the no. of rev.per sec
     so the angular speed    W  =   2π * 8/6 rev/sec
                                                    =  8/3 π radians  per sec

    linear speed   =    2πr multiply by the no. of rev per sec
                              =  2π 6* 8/6
                              =  16π cm/sec
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