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An automobile with 0.210M radius tires travels 65,000 KM before wearing them out. How many revolutions...

An automobile with 0.210M radius tires travels 65,000 KM before wearing them out. How many revolutions do the tires make neglecting any backing up and any change in radius due to wear? ____________revolutions
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Answer #1

IN THIS I HAVE USED CONCEPT OF UNITERY METHOD

DISTANCE TRAVEL IN ONE REVOLUTION -=2r

now no of revolution =total distance/distance cover in one revolution

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