1. A coin having a mass of m = 12 g, a thickness of h = 0.17 cm, and a radius of r= 1.5 cm has a small hole drilled through it so that it can be suspended from a thin wire and worn as an earring or pendant. The hole is at a distance of 7/8 r from the center of the coin as shown above. When suspended from this hole, the coin is a physical pendulum that swings back and forth with this hole as its axis of rotation. Assuming that the hole does not appreciably change the center of mass of the coin, determine the period of this physical pendulum.

College Physics
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ISBN:9781305952300
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Chapter1: Units, Trigonometry. And Vectors
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1. A coin having a mass of m = 12 g, a thickness of h = 0.17 cm, and a radius of r= 1.5 cm has a
small hole drilled through it so that it can be suspended from a thin wire and worn as an earring
or pendant. The hole is at a distance of 7/8 r from the center of the coin as shown above. When
suspended from this hole, the coin is a physical pendulum that swings back and forth with this
hole as its axis of rotation. Assuming that the hole does not appreciably change the center of
mass of the coin, determine the period of this physical pendulum.
Transcribed Image Text:1. A coin having a mass of m = 12 g, a thickness of h = 0.17 cm, and a radius of r= 1.5 cm has a small hole drilled through it so that it can be suspended from a thin wire and worn as an earring or pendant. The hole is at a distance of 7/8 r from the center of the coin as shown above. When suspended from this hole, the coin is a physical pendulum that swings back and forth with this hole as its axis of rotation. Assuming that the hole does not appreciably change the center of mass of the coin, determine the period of this physical pendulum.
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