A CD has diameter of 120 millimeters. When playing audio, the angular speed varies to keep the linearspeed constant where the disc is being read. When reading along the outer edge of the disc, the angularspeed is about 180 RPM (revolutions per minute). Find the linear speed.Roundyour answer to two decimal places.The linear speed of reading along the outer edge of the disc is Numbermeters per second.

A CD has diameter of 120 millimeters. When playing audio, the angular speed varies to keep the linear speed constant where the disc is being read. When reading along the outer edge of the disc, the angular speed is about 180 RPM (revolutions per minute). To find the linear speed. Solution: We have given that,The diameter of CD is d=120 mm=0.120 mSo, the radius of CD is r=d2=0.1202=0.060 mThe angular speed at outer edge is N=180 RPMSo, the angular velocity is ω=2πN60=2π18060=6π rad/sSince, the linear speed v is given byv=rω⇒v=0.060×6πUsing calculator we getv=1.130973355 m/s⇒v≃1.13 m/sTherefore, The linear speed of reading along the outer edge of the disc is 1.13 meters per second.