College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A light balloon filled with helium of density 0.180 kg/m3 is tied to a light string of length L = 3.00 m. The string is tied to the ground, forming an “inverted” simple pendulum (Fig. P13.71a). If the balloon is displaced slightly from equilibrium, as in Figure P13.71b, show that the motion is simple harmonic and determine the period of the motion. Take the density of air to be 1.29 kg/m3.
FIGURE P13.71
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