Question

Suppose there is a CD that is rotating at a rate of 450 rpm. Suppose that there is a speck of dust that is 4 cm away from the center of the CD. What is the total distance traveled by that speck of dust in 2 minutes

Answer 1

`d=226.2m`

Explanation:

From the question we are told that:

Rotational Speed
`N =450rpm`

Time
`T=2min=>120sec`

Radius
`r=4cm=>0.04m`

Generally the equation for Distance Traveled is mathematically given by

`d=\omega*2\pi r*T`

`d=450*2*\pi*0.04*2`

`d=226.2m`