1. how they work.
2. some useful websites on how to play yo-yos
3. websites that show stunning yo-yo moves.
Put your input in the comments :)
Wednesday, September 16, 2009
How Do Yo-yos Work?
1. how they work.
2. some useful websites on how to play yo-yos
3. websites that show stunning yo-yo moves.
Put your input in the comments :)
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On the surface, the yo-yo is an incredibly simple toy -- it's really nothing but a spool attached to a length of string. But in the right hands, it can be something extraordinary: An accomplished yo-yoist can send the yo-yo flying out in all directions, make it hover in mid air, then snap it back into his or her palm. Ordinary string and wood (or plastic) are brought to life!
ReplyDeleteIf you want to find out more,you can visit www.howstuffworks.com/yo-yo.htm
shannon ang
The word "yo-yo" and the modern yo-yo design come from the Philippines. Unlike the original Chinese and Greek yo-yos, Philippine yo-yos (the word means "come come" or "come back" in the native Tagalog language) had the ability to "sleep." This unique toy may have been an adaptation of the Chinese yo-yo, or it may have developed out of a Philippine hunting weapon. In any case, it dates back at least a few hundred years in the region.
ReplyDeleteShannon ang
The string of the yo-yo is wrapped around the yo-yo's axle, and because one end of the string is attached to your finger, the yo-yo is forced to rotate as it drops. If the yo-yo could not rotate, it would not drop. a momentary tug on the string causes the friction between the string and the axle briefly to increase so that the axle no longer slips within the string. When the axle thus stops slipping, the angular momentum of the spinning yo-yo is sufficient to cause the string to wind around the axle. This, of necessity, causes the yo-yo to begin to 'climb' back up the string. After the first one or two rotations, the string can no longer slip, so the process of climbing up the string continues beyond the momentary application of the tug.For more,please go to http://www.physlink.com/Education/askExperts/ae18.cfm
ReplyDeleteThis website shows yo-to stunts http://www.youtube.com/watch?v=K4F1E5xAP5w&feature=related
It's so fast that you can onli see a white circular thing fying around.
Song Ming Jun
got any goood yo yo sites anot?this is klifton,not anissh.dunno why but cannot join s member
ReplyDeleteI have a website which shows a person playing yo-yo tricks is
ReplyDeletehttp://www.begin2spin.com/index.php
Yo-yo is just a simple game. It is used at the right hand for playing.I have a website that is www.yo-yo.com
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteHow a yoyo works
ReplyDeleteWhen the yo-yo is released, both forms of potential energy change to kinetic energy.The spinning motion gives the yo-yo gyroscopic stability. A spinning object resists changes to its axis of rotation because an applied force moves along with the object itself. If you push on a point at the top of a spinning wheel, for example, that point moves around to the front of the wheel while it is still feeling the force you applied. As the point of force keeps moving, it ends up applying force on opposite ends of the wheel -- the force balances itself out. This phenomenon keeps a yo-yo's axis perpendicular to the string, as long as the yo-yo is spinning fast enough. (See How Gyroscopes Work to learn more.)
If the string is attached securely to the axle, as in the original design, the spinning axle will grip the string and start rewinding it; the yo-yo will travel back up the string. The yo-yoist must give a slight tug on the string as the yo-yo rewinds, in order to compensate for the energy lost to friction.
In the modern yo-yo, there is less friction between the string and the axle, since the string is only looped around the axle. When the spool completely unwinds, it will not automatically grip the spring -- it will simply spin freely. To get the yo-yo to rewind, the yo-yoist jerks on the string a little bit. This tug briefly increases the friction between the string and the axle so that the axle starts rewinding the string
This comment has been removed by the author.
ReplyDeleteThis comment has been removed by the author.
ReplyDeleteHow to play YO-YO
ReplyDeletehttp://entertainment.howstuffworks.com/easy-yo-yo-tricks.htm
How does the yo-yo work?
ReplyDelete"The yo-yoist winds the string tightly around the axle. Sitting in the yo-yoist's palm, the yo-yo has a certain amount of potential energy (energy of position). This potential energy takes two different forms:
The yo-yo is held up in the air, giving it the potential to fall to the ground. The yo-yo has string wound around it, giving it the potential to spin as it unwinds.When the yo-yo is released, both forms of potential energy change to kinetic energy. The yo-yo spool falls straight to the ground, which builds a certain amount of linear momentum.
Websites that show yo-yo stunts:
http://www.youtube.com/watch?v=iy9PcPhSgu8
http://www.youtube.com/watch?v=XMnsx1O3BjI (MUST WATCH)
Useful Website on how you can play yo-yo.
http://www.begin2spin.com/index.php
In the modern yo-yo, there is less friction between the string and the axle, since the string is only looped around the axle. When the spool completely unwinds, it will not automatically grip the spring -- it will simply spin freely. To get the yo-yo to rewind, the yo-yoist jerks on the string a little bit. This tug briefly increases the friction between the string and the axle so that the axle starts rewinding the string. Once it starts rewinding, this sort of yo-yo will return to the yo-yoist just like the older design.
ReplyDeleteThe ability to make the yo-yo spool spin on the end of its string, or "sleep," made yo-yoing a much more interesting challenge. Yo-yoists try to keep the spool sleeping while making shapes with the string and swinging the yo-yo around them. Another trick is to "walk the dog" -- let the spinning spool roll along the ground before pulling it back in.
Over the years, manufacturers have come up with a number of mechanisms to make it easier to do these sorts of tricks. In the next section, we'll check out a few of the more popular variations found in modern yo-yos.
Shannon ang
The yo-yo has a string that is wound tightly around the axle.The yo-yo has a certain amount of potential energy.It allows the yo-yo to fall to the ground and spin as the string unwinds.When the yo-yo is released,the potential energy changes into kinetic energy.The yo-yo unwinds as it drops to the ground,forcing itto rotate.
ReplyDeleteUseful websites on how to play the yo-yo:
www.yoyogames.com
www.articlesbase.com/videos/5min/7247
Websites on how to do yo-yo stunts:
http://www.youtube.com/results?search_query=+yo-yo+stunts&search_type=&aq=f
http://www.youtube.com/watch?v=QJAB2xBa1qY
ReplyDeletehttp://www.youtube.com/watch?v=ZP8ClirexM0&feature=related
A video about people in a yo yo tournament.
Did anyone visit the website to view the stunning tricks? Once visited, compare and share which is the best :)
ReplyDeleteDo you like to play yo-yos? It is now a fad and many people, adults and very young children included are crazy over it. It is an old toy actually worked based on the principle of simple machine (wheel and axle), potential and kinetic energies.
Klifton, you need to have an email account first then click on "Follow".
How does a yo-yo work?
ReplyDeleteThe yo-yoist winds the string tightly around the axle. Sitting in the yo-yoist's palm, the yo-yo has a certain amount of potential energy (energy of position). This potential energy takes two different formsThe yo-yo is held up in the air, giving it the potential to fall to the ground. The yo-yo has string wound around it, giving it the potential to spin as it unwinds.When the yo-yo reaches the end of the string, it can't fall any farther. But, because it has a good deal of angular momentum, it will keep spinning.
Websites:
http://www.youtube.com/watch?v=iy9PcPhSgu8
http://www.youtube.com/watch?v=CSm0VgGwBSo&feature=fvw
http://www.ehow.com/videos-on_54_do-basic-yoyo-tricks.html
Here's a website that has cool yo-yo stunt videos:
ReplyDeletehttp://www.yomega.com/tricks/index.htm
Some useful websites on how to play a yoyo
ReplyDeletehttp://superyoyo.com.sg/tricks.html
Websites that shows stunning yoyo moves
http://www.ehow.com/search.aspx?s=yoyo+trick&Options=0
Salifian, I love the Spongebob pic you have :) It is one of my favourite cartoon characters :)
ReplyDelete