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4. In the figure below, the pendulum consists of a uniform disk with radius r =
31 cm and mass 508 g attached to a uniform rod with length L = 447 mm and
mass 282 g. Calculate the period (in seconds) of oscillation.
Final answer in four decimal places.
Hint: Use parallel-axis theorem, and the corresponding moment of inertia. Also, be
wary of the conversions here.

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