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December 21, 2014

Homework Help: Physics

Posted by Bob on Wednesday, November 19, 2008 at 11:51am.

When a wheel is rotated through an angle of 35 degrees, a point on the circumference travels through an arc length of 2.5 m. When the wheel is rotated through angles of 35 rad and 35 rev, the same point travels through arc lengths of 143 m and 9.0 X 10^2 m, respectively. What is the radius of the wheel?

I know that the radius is the change in arc length divided by the change in the angle in radians, but I don't understand the second sentence (the 35 rev part).

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