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PHY 121 Ch 13 Lecture

# PHY 121 Ch 13 Lecture - Lecture 23 Thursday April 17 1 The...

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1 Lecture 23 Thursday, April 17

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2 The period T of an oscillation A. is the time needed to complete the oscillation. B. is the number of oscillations per unit time. C. is measured in Hertz. D. is proportional to the frequency of the oscillation.
3 In simple harmonic motion A. the displacement is proportional to minus the acceleration. B. the displacement is proportional to minus the velocity. C. the velocity is proportional to minus the acceleration. D. the acceleration is constant.

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4 An oscillating mass is attached to an ideal spring. The mass sits on a horizontal table and all forces other than the spring force cancel out. A. The period of the oscillation depends on the mass, the spring constant, and the oscillation amplitude. B. The period of the oscillation depends on the mass, the spring constant, and the initial displacement. C. The period of the oscillation depends on the mass and the spring constant. D. The period of the oscillation depends on the mass, the spring constant, the initial displacement, and the initial velocity.
5 A phase angle φ = 0 corresponds to an oscillation that starts A. with zero displacement.

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