Teaching Physics with the Physics Suite
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Problems Sorted by Type | Problems Sorted by Subject | Problems Sorted by Chapter in UP
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Teaching Physics with the Physics Suite
Home | Action Research Kit| Sample Problems | Resources | Product Information |
Problems Sorted by Type | Problems Sorted by Subject | Problems Sorted by Chapter in UP |
A current generation hard drive in a computer spins at a rate of 7000 rpm. The disk in the drive is about the same size as a floppy disk. Estimate the coefficient of friction that would permit the frictional force keep a speck of dust sitting on the disk from sliding off. Assume the speck has a mass of 50 mg. Discuss the implications of your result.
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Page last modified October 9, 2002: R05