Kinetic energy of movement is demonstrated when the yo-yo moves up and down, while the spinning action of the yo-yo demonstrates kinetic energy of rotation. In addition to having two types of kinetic energy, yo-yos also have two types of momentum.
Physical objects have momentum when they contain both mass and velocity. As the yo-yo falls, that potential energy changes to kinetic energy, which increases as the yo-yo falls down. As the toy climbs back up, the kinetic energy changes back to potential energy. The rate of drop and the rotation rate are greatest when the bottom is reached and the string is completely unwound.
The spinning yo-yo contains angular momentum or rotational kinetic energy derived from the gravitataion potential energy through which the yo-yo has dropped. Usually, the string is tied loosely around the axle so that the yo-yo can continue to spin at the bottom.
Because the full length of the string has been paid out, the yo-yo can drop no further and, consequently, the rotation rate cannot increase further. If left in this condition, the friction between the axle and the string will eventually dissipate the energy of rotation or, equivalently, the angular momentum of the yo-yo and the yo-yo will come to rest. However, 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.
Some people have bought a brand new yoyo, they already know how to yoyo, they have heard a lot of great things about a particular yoyo online. They know what they are doing, they know that it is spinning fast enough. Well what has probably happened is you have bought a higher quality yoyo. In actual fact, a lot of new yoyos are designed to play unresponsive. What that means is that they are designed to not come back up when you pull them up.
What you need to do in this case — there is nothing wrong with the yoyo — you actually need to learn how to do what is called a bind. A bind is how you get and unresponsive yoyo like this — this is the YoyoFactory Whip , it is designed to play unresponsive like that — so you need to learn how to bind, because binding is how you get an unresponsive yoyo to wind up.
We have made a couple of videos helping you learn how to bind , so look at those. That should help you get over that hurdle. It may have created more questions than answers, but we will try to get around to those. Hopefully this has helped you out. Yoyo Trick. For this yoyo trick we also recommend:. 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. Thrust your arm down, releasing the yo-yo and spreading your fingers.
Point them a bit downward while you throw your yo-yo down, rotating your palm to the floor to snap the yo-yo back up. For a more basic move, start with your palm facing down. To get the yoyo to come back up all you need to do is give the yoyo a little tug and it should come back up. If you are just dropping the yoyo like this, a lot of yoyos will not come right back up.
You really need to learn how to do a proper throw. When you let go of the yo-yo, gravity pulls it down. One other thing happens while the yo-yo is dropping. In , the Scientific American Supplement published an article titled Filipino Toys which showed it and named it a yo-yo.
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