(adsbygoogle = window.adsbygoogle || []).push({}); 1. A computer is reading data from a rotating CD-ROM. At a point that is 0.0330 m from the center of the disk, the centripetal acceleration is 264 m/s2. What is the centripetal acceleration at a point that is 0.0702 m from the center of the disc?

2. a_{c}=v^{2}/r

3. So my thoughts here are that it should be assumed that the velocity is constant. So I need to fine that velocity for the known radius and acceleration with the equation about. After I find the velocity, I can plug it into the equation with the new radius and find the acceleration that way.

a_{c}=v^{2}/r

264=v^{2}/.0330

v^{2}=8.712 m/s

v=2.95161 m/s

then plugging that into the equation with the other radius

a_{c}=v^{2}/r

a_{c}=8.712/.0702

a_{c}=124.10256 m/s^{2}

This is not the right answer for my homework though. Not sure what I am doing wrong. Anyone know?

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# Homework Help: Centripetal Force acceleration

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