problem13_91

University Physics with Modern Physics with Mastering Physics (11th Edition)

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13.91: a) m. 97 . 3 ) 2 ( 2 = = π T g L b)There are many possibilities. One is to have a uniform thin rod pivoted about an axis perpendicular to the rod a distance d from its center. Using the desired period in Eq. (13.39) gives a quadratic in d , and using the maximum size for the length of the rod gives a pivot point a distance of 5.25 mm, which
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Unformatted text preview: is on the edge of practicality. Using a dumbbell, two spheres separated by a light rod of length L gives a slight improvement to d =1.6 cm (neglecting the radii of the spheres in comparison to the length of the rod; see Problem 13.94)....
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