Mathematics · Speed, Time and Distance
A record player stylus moves along a spiral groove cut on an annular portion of a disc. A record with inner radius 4 cm and outer radius 10 cm of the annulus, turning 100 times, plays for 22 minutes. During this time, the stylus travels at an average linear speed that is approximately equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1440 m/h
- 2220 m/h
- 3120 m/h✓
- 4100 m/h
Correct answer
120 m/h
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