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Consider a science exhibit consisting of a wooden pole of length 1.3 m and mass 4.0 kg as
shown in the figure below. The pole rotates fricionless-ly about a horizontal axis through the center.
Two glass spheres of mass 4.2 and 2.1 kg are attached to the ends of the pole. After the pole is released
from the horizonal position, what is its angular velocity when it swings through the vertical?
2.0 kg
6.
-1.0 m
2.0 kg
4.0 kg
4.0 kg
(a)
(b)

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