Answered

A compact disc has a radius of 6 centimeters.

AWhat is its circumference in meters?
BIf the cd rotates 4 times per second, what is the linear speed of a point on the outer edge of the cd? Give

your answer in meters per second.

CWhat is the linear speed of a point 3 centimeters from the center of the cd? (Assume the angular speed

has not changed).

Verified Answer :

Circumference is \(2\pi{r}=37.7\) (approx.)
Speed is 4 times that. That is, 150.8 cm/s or 1.508 m/s.
If we get a point at distance 3 cm, we take the radius half of that. The circumference also gets half, so does the linear speed. We get 0.754 m/s or 75.398 cm/s.

Skyyyy666

Answer:75.389

Explanation:

Related Questions