Ps- rotations : PS Archive
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# Ps- rotations

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Joined: 05 Jul 2006
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19 Sep 2006, 18:04
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A circular rim 28 inches in diameter rotates the same number of inches per second as a circular rim 35 inches in diameter. If the smaller rim makes x revolutions per second, how many revolutions per minute does the larger rim make in terms of x?
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Joined: 01 Jun 2006
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20 Sep 2006, 01:06
The number of inches of both are equal
After one second the smaller rim has rotated the number of inches is 2pi*28*x
So in 1 minute the bigger one has the number of revolution is
2*pi*28*x*60/(2*pi*35)=48x
20 Sep 2006, 01:06
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