I was curious as to how to approach this problem... An old phonograph record is spinning at 77.6 rpm. The phonograph needle is stuck 7.4 cm from the spindle. a) What is the angular velocity of the record? b) What is the speed of the record below the needle? c) What is the period corresponding to one complete rotation of the record? I think the easiest way to approach it would be by finding the frequency but I am not quite sure how to get it. Any help would be greatly appreciated.