When the switching means causes the motor to spin, the disks free {HEAD ~ spin} around {TAIL ~ the motor shaft} 
around
When the switching means causes the motor to spin , the disks free { HEAD ~ spin } around { TAIL ~ the motor shaft }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL