The bird perched on the swing in the figure has a mass of 44 g, and the base of the swing has a mass of 136.4 g. Assume that the swing and the bird are originally at rest and that the bird then takes off horizontally at 2.74 m/s. The acceleration of gravity is 9.8 m/s2. If the base can swing freely (without friction) around the pivot, how high will the base of the swing rise above its original level?
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