Homework Help: Physics

Posted by Alex on Sunday, February 19, 2012 at 7:54pm.

A computer is reading data from a rotating CD-ROM. At a point that is 0.0368 m from the center of the disk, the centripetal acceleration is 274 m/s2. What is the centripetal acceleration at a point that is 0.0781 m from the center of the disc?

Physics - drwls, Sunday, February 19, 2012 at 11:39pm
The centripetal acceleration is proportional to the distance from the center, since the angular velocity w is the same everywhere on the disc. .

(0.0781/0.0368) x 274 = _____ m/s^2

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