Compact discs-long-playing records are made from materials

Reference no: EM13667554

Compact discs and long-playing records are made from same materials. The former have a diameter of about 12 cm, and the latter, about 32 cm. When in use, records spin at 33.333 rev/min, and compact discs spin at, say, 365 rev/min. Ignoring the holes in both objects and assuming that a compact disc has half the thickness of a record and 0.90 of its density, what is the ratio of the angular momentum of a compact disc in utilize to that of a record?

Reference no: EM13667554

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