Bullwhip wave mechanics: What changes?

In summary, the conversation discusses the question of which wave property changes as a bullwhip wave propagates toward the tip, whether it is wavelength or amplitude. The discussion includes a comparison to sound waves, as well as links to various sources that offer explanations and insights on the topic. Ultimately, it is concluded that it is the concentration of kinetic energy into a smaller and smaller whip segment that causes the crack of the whip.
  • #1
Greylorn
Gold Member
48
0
What wave property changes as a bullwhip wave propagates toward the tip? Wavelength or amplitude?

The problem seemed at first analogous to that of describing the behavior of a sound wave propagating through air of linearly decreasing density, except that sound is longitudinal.
 
Physics news on Phys.org
  • #2
This might help you think about it :)

http://paws.kettering.edu/~drussell/Demos/reflect/reflect.html
 
  • #3
This is one of those controversial issues that seesaws between rival camps: in this case the supersonic versus the non-supersonic factions. Even skilled whip crackers disagree. The best explanation I've found so far is here: http://home.comcast.net/~a-mcnibble/Rants/WhyWhipsCrack.pdf according to which it's the concentration of kinetic energy into a smaller and smaller whip segment that does it.
 
Last edited by a moderator:
  • #4
univox360 said:
This might help you think about it :)

http://paws.kettering.edu/~drussell/Demos/reflect/reflect.html

Thank you! The link answered the question in favor of amplitude, and is a fine exposition of other aspects of wave mechanics, providing even more to think about. Greatly appreciated.
 
  • #5
Bill_K said:
This is one of those controversial issues that seesaws between rival camps: in this case the supersonic versus the non-supersonic factions. Even skilled whip crackers disagree. The best explanation I've found so far is here: http://home.comcast.net/~a-mcnibble/Rants/WhyWhipsCrack.pdf according to which it's the concentration of kinetic energy into a smaller and smaller whip segment that does it.

Bill,
Great link! Although I was more interested in the mechanics of a transverse wave in a variable medium (looking for cosmological implications) than in what happens at the end of a wave's transmission, I was being short sighted. The end may be the most important part of the problem. Thank you for the insight!
 
Last edited by a moderator:

1. What is a bullwhip wave?

A bullwhip wave is a type of wave that occurs when a person wields a bullwhip. It is characterized by a sharp crack sound and a visible ripple effect along the length of the whip.

2. How does the bullwhip wave change over time?

The shape and speed of the bullwhip wave change over time due to various factors such as the length and flexibility of the whip, the force applied by the person wielding it, and the air resistance.

3. What factors affect the movement of the bullwhip wave?

The movement of the bullwhip wave is affected by the length and flexibility of the whip, the force applied by the person wielding it, the air resistance, and the properties of the material the whip is made of.

4. How does the bullwhip wave behave differently in different environments?

The behavior of the bullwhip wave can vary in different environments due to factors such as air temperature, humidity, and wind speed. These factors can affect the speed and shape of the wave, as well as the sound it produces.

5. What practical applications does the study of bullwhip wave mechanics have?

The study of bullwhip wave mechanics can have practical applications in fields such as engineering and sports. It can help in designing more efficient whip-like structures, understanding the physics of cracking sounds, and improving the performance of sports equipment such as fishing rods and bullwhips.

Similar threads

  • Mechanics
Replies
19
Views
6K
Replies
31
Views
679
Replies
22
Views
6K
Replies
49
Views
3K
Replies
20
Views
4K
Replies
7
Views
1K
Replies
11
Views
1K
Replies
3
Views
2K
Replies
1
Views
2K
Back
Top