Worksheet
Vibrating Systems - Period and Frequency
Printer Friendly Version
Instructions:
Answer the following questions on a separate sheet of paper. Show all of your work as illustrated in the example shown below. Some of the problems may seem simple or intuitive, but work must be shown for credit.
Example:
You are watching workers along a railroad strike a railroad tie that holds the tracks together. The workers swing with a constant rhythm so that you hear 14 strikes over one minute (60 sec) of time.
What is the frequency of the workers' swings?
What is their period?
1. A wave hits a pylon of a pier every 2.7 seconds. What is the frequency of the waves?
2. A pendulum swings back and forth 27 times in 35.2 sec. What is the period of the pendulum?
What is this pendulum's frequency?
3. A jack hammer has a frequency of 37 hz; that is, it vibrates 37 times a second in order to break up concrete and other material. How long does it take to vibrate one time; that is, what is its period?
4. A police officer observes cars traveling down a highway. He counts 78 cars pass by him every minute. What is the frequency of the cars in hertz?
On average, how many seconds must the police office wait between cars?
5. A mass attached to a spring vibrates up and down with a frequency of 1.7 hertz. How much time would be required for it to complete 33 vibrations?
6. The A-string on a guitar vibrates back and forth at a frequency of 220 hertz. How many seconds does it take the string to move from its lowest position to its highest position? Be careful and take into account how much of a vibration passes as the string vibrates between it lowest to highest position.
7. An electron orbits a nucleus with a period of 23.1 x 10
^{-9}
seconds, or 23.1 nanoseconds. What is the frequency of the electron’s oscillations?
How many orbits would an electron make in one full second?
8. A group of children are playing jump rope. Each child stays in the middle for 2 minutes. If the frequency the children are spinning the rope is 0.76 hertz. How many times will a child need to jump while in the middle?
Related Documents
Lab:
Labs -
Directions: Constructive and Destructive Interference
Labs -
Doppler Effect: Source Moving
Labs -
Frequency of Vibrating Strings
Labs -
Illuminance by a Light Source
Labs -
Inertial Mass
Labs -
Interference Shading
Labs -
Pipe Music
Labs -
Relationship Between Tension in a String and Wave Speed
Labs -
Relationship Between Tension in a String and Wave Speed Along the String
Labs -
Ripple Tank Checklists
Labs -
Ripple Tank Checklists
Labs -
Ripple Tank Sample Solutions
Labs -
Ripple Tank Student Involvement Sheet
Labs -
Simple Pendulums: Class Data
Labs -
Simple Pendulums: LabPro Data
Labs -
Speed of a Wave Along a Spring
Labs -
Speed of Sound in Air
Labs -
Speed of Sound in Copper
Labs -
Video: Law of Reflection
Labs -
Video: Law of Reflection Sample Diagram
Resource Lesson:
RL -
Barrier Waves, Bow Waves, and Shock Waves
RL -
Beats: An Example of Interference
RL -
Interference of Waves
RL -
Interference: In-phase Sound Sources
RL -
Introduction to Sound
RL -
Law of Reflection
RL -
Physical Optics - Thin Film Interference
RL -
Resonance in Pipes
RL -
Resonance in Strings
RL -
Ripple Tank Video Guides
RL -
SHM Equations
RL -
Simple Harmonic Motion
RL -
Sound Level Intensity
RL -
Speed of Waves Along a String
RL -
The Doppler Effect
RL -
Vibrating Systems - Simple Pendulums
RL -
Vibration Graphs
RL -
Wave Fundamentals
RL -
Waveform vs Vibration Graphs
REV -
Orbitals
Review:
REV -
Chapter 26: Sound
REV -
Honors Review: Waves and Introductory Skills
REV -
Physics I Review: Waves and Introductory Skills
REV -
Sound
REV -
Waves and Sound
REV -
Waves and Sound
Worksheet:
APP -
Echo Chamber
APP -
The Dog-Eared Page
CP -
Light Properties
CP -
Reflection
CP -
Shock Waves
CP -
Sound
CP -
Waves and Vibrations
NT -
Apparent Depth
NT -
Atmospheric Refraction
NT -
Concert
NT -
Light vs Sound Waves
NT -
Shock Cone
NT -
Sound Waves
NT -
Standing Waves
WS -
Beats
WS -
Beats, Doppler, Resonance Pipes, and Sound Intensity
WS -
Counting Vibrations and Calculating Frequency/Period
WS -
Doppler - A Challenge Problem
WS -
Doppler Effect
WS -
Fixed and Free-end Reflections
WS -
Fundamental Wave Terms
WS -
Illuminance 1
WS -
Illuminance 2
WS -
Interference: In-phase Sound Sources
WS -
Lab Discussion: Inertial and Gravitational Mass
WS -
More Practice with Resonance in Pipes
WS -
More Practice with the Doppler Practice
WS -
Practice with Resonance in Pipes
WS -
Practice with the Doppler Effect
WS -
Practice: Speed of a Wave Along a String
WS -
Pulse Superposition: Interference
WS -
Ripple Tank Review
WS -
Sound Vocabulary
WS -
Speed of Sound
WS -
Speed of Sound (Honors)
WS -
Standing Wave Patterns #1
WS -
Standing Wave Patterns #2
WS -
Standing Wave Patterns #3
WS -
Standing Wave Patterns #4
WS -
Wave Phenomena Reading Guide
WS -
Wave Pulses
WS -
Waveform and Vibration Graphs #1
WS -
Waveform and Vibration Graphs #2
TB -
25A: Introduction to Waves and Vibrations
TB -
25B: Vibrations and Waves
TB -
25C: Wave Speed
TB -
25D: Interference
TB -
25E: Doppler
TB -
25F: Doppler Effect (continued)
TB -
26B: Speed of Sound
TB -
26C: Resonance
TB -
26D: Beats
TB -
26E: Decibels
TB -
27A: Light Properties
TB -
Decibels and Sound Intensity #1
TB -
Decibels and Sound Intensity #2
TB -
Interference Re-examined
TB -
Refraction Phenomena Reading Questions
TB -
Sound: Mixed Practice
TB -
Waves and Vibrations
Copyright © 2007-2017
William A. Hilburn
All rights reserved.