Question

Cd rotates outer edge and inner edge

A) Outer edge
B) Inner edge
C) Both rotate at the same speed
D) It depends on the CD player

Answer 1

The outer edge of the CD would have the highest speed. The tangential speed of a point depends on its distance from the center of rotation.

Step-by-step explanation:

In terms of angular velocity, the edge of the object that is farthest from the axis of rotation will have the highest speed. In this case, the outer edge of the CD would have the highest speed.

The tangential speed of a point at the edge of the disc can be calculated using the formula:

Tangential speed = angular velocity x radius

For a point halfway to the center of the disc, the tangential speed would be half of the tangential speed at the edge.