HW Ch15 - HW Ch. 15 Oscillations and Harmonic Motion...

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HW Ch. 15 Oscillations and Harmonic Motion Chapter 15: Oscillations and Harmonic Motion Conceptual problems 15.C. 2 (5.00) Consider the displacement, velocity, and acceleration vectors of an object moving in SHM. Which pair of these vectors always point in opposite directions? Displacement Velocity Acceleration (0/1 submissions used) 15.C. 3 (5.00) In old pocket watches, a balance wheel acts as a torsional pendulum, rotating with a fixed period. If a pocket watch is running slow, the period of the balance wheel is too long. Would you add or remove mass from the outer edge of the balance wheel to correct it? Remove mass******* Add mass (0/1 submissions used) 15.C. 5 (5.00) What are the units for the damping coefficient constant? N/m kg/s*******
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kg/s 2 (0/1 submissions used) Section 0: Introduction 15.0.1 (5.00) Using the simulation in the interactive problem in Section 15.0, answer the following questions. (a) If you increase the amplitude, does the period increase, decrease, or stay the same? (b) What does the shape of the curve look like? Stay the same Sinusoidal function (a) IncreaseDecreaseStay the same (0/1 submissions used) (b) LineParabolaSinusoidal functionCircle (0/2 submissions used) Section 3: Period and frequency 15.3.1 (5.00) Consider the minute hand on a clock. (a) Compute the frequency of its motion in cycles per second. State your answer to three significant digits. (b) Do the same for the hour hand. (a) (0/6 submissions used) Hz 2.78e-4 (b) (0/6 submissions used) Hz 2.31e-5 15.3.2 (5.00) A graph of the displacement of an object moving in SHM is shown. Determine the frequency of the object's motion. (Assume you can read the graph points to two significant figures.) (0/6 submissions used) Hz Section 4: Angular frequency 15.4.2 A potter's wheel rotates with an angular frequency of 1.54 rad/s. What is its
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(5.00)
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This note was uploaded on 05/11/2011 for the course PHYS 1401 taught by Professor Broyles during the Spring '08 term at Collin College.

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HW Ch15 - HW Ch. 15 Oscillations and Harmonic Motion...

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