Answer Checking

Question

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 200 RPM (revolutions per minute). Find the linear speed. 

 

Round your answer to two decimal places.

Answer 1

C = π(120 mm)

V_linear = 200(π)(120 mm) / minute