Podcast
Questions and Answers
What does the restoring force in a pendulum do as the bob moves towards the mean position?
What does the restoring force in a pendulum do as the bob moves towards the mean position?
- Reverses the direction of the bob
- Keeps the speed of the bob constant
- Increases the speed of the bob (correct)
- Decreases the speed of the bob
At which point does the bob have the maximum velocity during its motion?
At which point does the bob have the maximum velocity during its motion?
- At the extreme position
- Point B
- Mean position O (correct)
- Point A
What is the direction of the restoring force acting on the bob when it is at point B?
What is the direction of the restoring force acting on the bob when it is at point B?
- Diagonal towards the ground
- Away from the mean position
- Horizontal to the path of motion
- Towards the mean position (correct)
How does the velocity of the bob change as it moves from point O to point B?
How does the velocity of the bob change as it moves from point O to point B?
What ultimately causes the pendulum to undergo simple harmonic motion?
What ultimately causes the pendulum to undergo simple harmonic motion?
What happens to the acceleration of the bob as it moves towards the mean position O?
What happens to the acceleration of the bob as it moves towards the mean position O?
Which statement is true about the forces acting on the pendulum bob during its motion?
Which statement is true about the forces acting on the pendulum bob during its motion?
What effect does inertia have on the motion of the pendulum bob as it passes through the mean position?
What effect does inertia have on the motion of the pendulum bob as it passes through the mean position?
What is the time period (T) for a simple pendulum 1.0 m long at a location where g = 10.0 m s$^{-2}$?
What is the time period (T) for a simple pendulum 1.0 m long at a location where g = 10.0 m s$^{-2}$?
What happens to the motion of a vibrating body in the presence of friction?
What happens to the motion of a vibrating body in the presence of friction?
If a pendulum has a time period of 1.99 s, what is its frequency (f)?
If a pendulum has a time period of 1.99 s, what is its frequency (f)?
Which of the following best defines amplitude (A) in the context of vibration?
Which of the following best defines amplitude (A) in the context of vibration?
Which scientist is credited with inventing the pendulum clock?
Which scientist is credited with inventing the pendulum clock?
What is the relationship between frequency (f) and time period (T)?
What is the relationship between frequency (f) and time period (T)?
In an ideal vibrating system, what would happen to the motion without any friction or resistance?
In an ideal vibrating system, what would happen to the motion without any friction or resistance?
What effect does damping have on the mechanical energy of a vibrating system?
What effect does damping have on the mechanical energy of a vibrating system?
What determines the time period of a simple pendulum?
What determines the time period of a simple pendulum?
In simple harmonic motion, where is the acceleration of the body directed?
In simple harmonic motion, where is the acceleration of the body directed?
Which of the following statements about wave speed is correct?
Which of the following statements about wave speed is correct?
What occurs during the reflection of waves?
What occurs during the reflection of waves?
Which type of wave does not require a medium for propagation?
Which type of wave does not require a medium for propagation?
In which type of wave do particles move parallel to the direction of wave propagation?
In which type of wave do particles move parallel to the direction of wave propagation?
What phenomenon occurs when waves change direction as they enter a different medium?
What phenomenon occurs when waves change direction as they enter a different medium?
Which of the following describes the maximum displacement from the mean position in SHM?
Which of the following describes the maximum displacement from the mean position in SHM?
Which of the following waves do not require a medium for propagation?
Which of the following waves do not require a medium for propagation?
What particle motion occurs in longitudinal waves?
What particle motion occurs in longitudinal waves?
How do longitudinal waves differ in speed when traveling through different states of matter?
How do longitudinal waves differ in speed when traveling through different states of matter?
Which of the following is an example of an electromagnetic wave?
Which of the following is an example of an electromagnetic wave?
What occurs in a longitudinal wave as it propagates through a medium?
What occurs in a longitudinal wave as it propagates through a medium?
Which of the following describes transverse waves?
Which of the following describes transverse waves?
What type of wave can be produced on a slinky when appropriately pushed and pulled?
What type of wave can be produced on a slinky when appropriately pushed and pulled?
Which statement about the speed of transverse waves is true?
Which statement about the speed of transverse waves is true?
What does the velocity of a wave depend on?
What does the velocity of a wave depend on?
How is the wavelength of a wave related to its wave speed and frequency?
How is the wavelength of a wave related to its wave speed and frequency?
If the wavelength of a wave is 2 m and its frequency is 5 Hz, what is the wave speed?
If the wavelength of a wave is 2 m and its frequency is 5 Hz, what is the wave speed?
What is the primary use of a ripple tank?
What is the primary use of a ripple tank?
What is the time period T in relation to frequency f?
What is the time period T in relation to frequency f?
In the formula v = f λ, if frequency increases while wavelength stays constant, what happens to wave speed?
In the formula v = f λ, if frequency increases while wavelength stays constant, what happens to wave speed?
In the example given, what is the wave speed if the frequency is 4 Hz and wavelength is 0.4 m?
In the example given, what is the wave speed if the frequency is 4 Hz and wavelength is 0.4 m?
What type of waves can the equation v = f λ apply to?
What type of waves can the equation v = f λ apply to?
What happens to the displacement of a cork when a wave passes through it?
What happens to the displacement of a cork when a wave passes through it?
In the described rope activity, how does point P move as the wave travels along the rope?
In the described rope activity, how does point P move as the wave travels along the rope?
What best defines a wave based on the described content?
What best defines a wave based on the described content?
What characterizes mechanical waves as opposed to other types of waves?
What characterizes mechanical waves as opposed to other types of waves?
Which of the following is NOT an example of a mechanical wave?
Which of the following is NOT an example of a mechanical wave?
What is the overall motion of particles in a medium as a wave passes through?
What is the overall motion of particles in a medium as a wave passes through?
How do the electric and magnetic fields in electromagnetic waves behave?
How do the electric and magnetic fields in electromagnetic waves behave?
Flashcards
String
String
The string connecting the bob to the fixed point in a simple pendulum.
Bob
Bob
The object attached to the string in a simple pendulum.
Mean position
Mean position
The point where the bob is at rest, the middle point of its oscillation.
mg cos θ
mg cos θ
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mg sin θ
mg sin θ
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Restoring force
Restoring force
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Time period
Time period
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Simple Harmonic Motion (SHM)
Simple Harmonic Motion (SHM)
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Wave
Wave
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Mechanical waves
Mechanical waves
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Electromagnetic waves
Electromagnetic waves
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Vibrations
Vibrations
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Crest
Crest
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Trough
Trough
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Time Period (T)
Time Period (T)
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Frequency (f)
Frequency (f)
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Amplitude (A)
Amplitude (A)
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Damped Oscillations
Damped Oscillations
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Longitudinal wave
Longitudinal wave
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Transverse wave
Transverse wave
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Compression
Compression
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Rarefaction
Rarefaction
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Wavelength (longitudinal)
Wavelength (longitudinal)
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Wavelength (transverse)
Wavelength (transverse)
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What is a wave?
What is a wave?
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What is wavelength?
What is wavelength?
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What is frequency?
What is frequency?
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What is wave speed?
What is wave speed?
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What is the relationship between wave speed, frequency, and wavelength?
What is the relationship between wave speed, frequency, and wavelength?
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What is a ripple tank?
What is a ripple tank?
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What are seismic waves?
What are seismic waves?
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How do seismic waves help us learn about the Earth?
How do seismic waves help us learn about the Earth?
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Diffraction
Diffraction
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Study Notes
Simple Harmonic Motion and Waves
- Simple harmonic motion (SHM) is oscillatory motion where acceleration is directly proportional to displacement from the mean position, always towards it.
- Examples of SHM include a mass on a spring, a pendulum, and a ball in a bowl.
- Damping refers to the reduction in amplitude of oscillations due to resistive forces like friction.
- Waves are disturbances that transfer energy, not matter.
- Mechanical waves need a medium to travel (e.g., water waves, sound waves.)
- Electromagnetic waves do not need a medium (e.g., light, radio waves).
- Transverse waves have oscillations perpendicular to the direction of wave travel (e.g., waves on a string).
- Longitudinal waves have oscillations parallel to the direction of wave travel (e.g., sound waves).
- Wave speed (v) equals frequency (f) multiplied by wavelength (λ) (v = fλ).
- Time period (T) is the time to complete one cycle and is the reciprocal of frequency (T = 1/f).
- Amplitude (A) is the maximum displacement from the mean position.
- Reflection is when a wave bounces off a surface.
- Refraction is when a wave changes speed and direction when entering a different medium.
- Diffraction is the spreading of waves as they pass through an opening or around an obstacle.
- Ripple tanks are used to visualize wave properties like reflection, refraction, and diffraction.
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Description
This quiz covers the fundamental concepts of simple harmonic motion and waves, including definitions, examples, and key equations. Learn about the differences between mechanical and electromagnetic waves, as well as transverse and longitudinal waves. Test your understanding of oscillatory motion, wave speed, and amplitude.
