16.2 Period and Frequency in Oscillations

Timing repeated vibrations such as a plucked guitar string, and the reciprocal link between seconds per cycle and cycles per second.

College Physics 2e, 16.2 Period and Frequency in Oscillations

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8 exercises

16.2 Exercise 1

Identify an event in your life (such as receiving a paycheck) that occurs regularly. Identify both the period and frequency of this event.

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16.2 Exercise 2

A mass attached to a spring oscillates and completes 50 full cycles in 30 s. What is the time period and frequency of this system?

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16.2 Exercise 3

What is the period of $\text{60} . 0 \text{Hz}$ electrical power?

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16.2 Exercise 4

If your heart rate is 150 beats per minute during strenuous exercise, what is the time per beat in units of seconds?

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16.2 Exercise 5

Find the frequency of a tuning fork that takes $2 . \text{50} \times \text{10}^{- 3} \text{s}$ to complete one oscillation.

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16.2 Exercise 6

A stroboscope is set to flash every $8 . \text{00} \times \text{10}^{- 5} \text{s}$ . What is the frequency of the flashes?

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16.2 Exercise 7

A tire has a tread pattern with a crevice every 2.00 cm. Each crevice makes a single vibration as the tire moves. What is the frequency of these vibrations if the car moves at 30.0 m/s?

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Engineering Application

Each piston of an engine makes a sharp sound every other revolution of the engine. (a) How fast is a race car going if its eight-cylinder engine emits a sound of frequency 750 Hz, given that the engine makes 2000 revolutions per kilometer? (b) At how many revolutions per minute is the engine rotating?

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