Giancoli's Physics: Principles with Applications, 7th Edition
11
Vibration and Waves
Change chapter11-1 to 11-3: Simple Harmonic Motion
11-4: Simple Pendulum
11-7 and 11-8: Waves
11-9: Energy Transported by Waves
11-11: Interference
11-12: Standing Waves; Resonance
11-13: Refraction
11-14: Diffraction
Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 29
Q
A pendulum makes 28 oscillations in exactly 50 s. What is its
- period and
- frequency?
A
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VIDEO TRANSCRIPT
This is Giancoli Answers with Mr. Dychko. Period is the amount of time for one cycle but you can take the amount of time for any number of cycles you like you can take it to have 50 seconds for 28 cycles and when you divide them you'll end up with the number of seconds per cycle. So, that's 1.8 seconds per cycle and that's the period. For frequency, it's the number of cycles per time and 28 cycles or 50 seconds gives you the amount of, number of cycles per second which is 0.56 hertz.
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