P2207_lecture_questions_oscill_gravity_momentum

# P2207_lecture_questions_oscill_gravity_momentum - Which of...

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1 Which of the following describes the motion x(t) shown below? t x(t) 4 s 2 m -2 m x(t) = ? A. 2 cos [( π /2) t + π /2] m B. 2 cos [(8 π ) t - π /2] m C. 2 cos [( π /2 t) - π /2] m D. 4 cos [( π /2) t + π /2] m E. 4 cos [( π /2) t - π /2] m t x(t) t v(t) t v(t) t v(t) A. Which of the following corresponds to the velocity v(t) of the particle whose position x(t) is as shown below? C. B. Which of the following corresponds to the acceleration a(t) of the particle whose position x(t) is as shown below? t x(t) t a(t) t a(t) t a(t) A. C. B. The initial displacement x m of a mass attached to a horizontal spring is doubled. What happens to: T: A. x 1/4 B. x 1/2 C. x 1 D. x 2 E. x 4 v m : A. x 1/4 B. x 1/2 C. x 1 D. x 2 E. x 4 a m : A. x 1/4 B. x 1/2 C. x 1 D. x 2 E. x 4 K m : A. x 1/4 B. x 1/2 C. x 1 D. x 2 E. x 4 E: A. x 1/4 B. x 1/2 C. x 1 D. x 2 E. x 4

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2 The mechanical energy of a damped harmonic oscillator decays by a factor of 4 in 10 s . How long does it take to decay by a factor of 16 ? A. 10 s B. 20 s C. 40 s D. 80 s E. 160 s The mechanical energy of a damped harmonic oscillator decays by a factor of 4 in 10 s.
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## This note was uploaded on 10/27/2010 for the course PHYS 2207 at Cornell.

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P2207_lecture_questions_oscill_gravity_momentum - Which of...

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