Gina Johnson
The sleeper is a fundamental yoyo trick that forms the basis of many more advanced tricks. It involves throwing the yoyo and letting it spin at the end of the string, which is called sleeping. The yoyo will eventually slow down and begin to climb up the string, but it can be woken up by giving it a tug. This increase in friction causes the yoyo to wind back up the string and return to the player's hand.
| Characteristics | Values |
|---|---|
| What is a yoyo's sleeping state? | The motion of the yoyo spinning at the end of the string is called "sleeping". |
| What is the science behind it? | The yoyo is an energy-converting machine. When released, it converts potential energy to kinetic energy. |
| What causes the yoyo to wake up from its sleep? | A flick of the wrist or a tug on the string increases the friction between the inner barrel and the string, causing the yoyo to wind up and return to the hand. |
| What is the sleeper trick? | The sleeper is a basic yoyo trick where the yoyo is thrown and allowed to sleep. It is the basis for many other tricks. |
| How to wake the yoyo up from its sleep? | Pull the string to wake the yoyo up from its sleep. |
| What type of yoyo is best for sleeping tricks? | Yoyos with metal bearings are built for spinning tricks. A ball-bearing axle also allows for longer sleep times. |
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What You'll Learn
The yoyo's spin slows down, and it begins to climb up the string
The yoyo's spin slows down due to several factors, including friction between the inner barrel and the string, air resistance, and the stability of the yoyo. As the spin slows, the yoyo begins to climb up the string due to the increased friction and tension on the string. This process is often initiated by a flick of the wrist or a gentle tug on the string, causing the string to double up on itself and creating enough friction for the yoyo to start spooling up.
The sleeper yoyo trick is a fundamental skill to master, as many other tricks build upon it. It involves throwing the yoyo and letting it spin at the end of the string, which is known as "sleeping." The goal is to keep the yoyo spinning for as long as possible before it climbs back up the string.
To achieve a longer sleep time, several factors come into play. Firstly, the type of yoyo and its construction are crucial. Yoyos with metal bearings are designed for spinning and can sleep more efficiently than cheap plastic yoyos, which may not respond as smoothly due to excessive friction. Additionally, the technique used to throw the sleeper trick significantly impacts sleep time. A smooth, controlled throw with a centred string can extend the sleep time, while a jerky motion or off-centre string can cause the yoyo to wake up prematurely.
While the yoyo is sleeping, it is essential to maintain stability and avoid any sudden movements that could cause it to wake up. However, once the yoyo begins to climb up the string, a gentle tug may be necessary to guide it back up and ensure it doesn't get stuck halfway. This balance between stability and controlled movement is the key to mastering the sleeper trick and provides the foundation for more advanced yoyo tricks.
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The yoyo stops spinning and begins to wind up
The yoyo's spinning motion at the end of the string is called "sleeping". As the yoyo slows down, the player must gently tug it upwards to prevent it from touching the ground. If the yoyo is spinning without winding the string, it means there is insufficient friction between the inner barrel and the string to initiate the winding process. By flicking their wrist or tugging on the string, the player can increase this friction and cause the yoyo to start winding up.
The type of yoyo also affects its ability to sleep and wake up. Yoyos with metal bearings are designed for spinning and can sleep for longer periods, while cheap plastic yoyos may not respond as smoothly. Fixed axle yoyos, such as butterflies and imperials, tend to have shorter sleep times compared to trans-axle yoyos. Additionally, the more centred the string is on the yoyo, the longer the sleep time will be. If the string brushes against the sides of the yoyo, it can disrupt the sleep and cause the yoyo to wake up prematurely.
To summarise, the yoyo stops spinning and begins to wind up due to an increase in friction caused by the player's wrist flick or tug on the string. The type of yoyo, its axle, and the positioning of the string also play a role in how the yoyo wakes up after sleeping.
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The yoyo reaches the player's hand
To wake the yoyo from its sleeping state and bring it back to the player's hand, a tug or flick of the wrist is required. This action increases the friction between the string and the yoyo's axle, initiating the winding process. The increased friction between the string and the barrel as the string winds up also contributes to the yoyo's ascent.
The timing of the tug is crucial. If the yoyo is allowed to sleep for too long, it may not have enough energy left to climb back up the string. Additionally, the stability of the yoyo during sleep can be influenced by factors such as the centredness of the string and the presence of knots, which can impact the overall performance.
As the yoyo slows down, it will start to reel up the string. The player may need to gently guide it with their hand, ensuring they pull up before the yoyo stops spinning to prevent it from getting stuck. Once the yoyo has returned to the player's hand, they can grasp it with their palm, smoothly finishing the trick and impressing their audience.
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The yoyo is modified to sleep longer
The yoyo is a simple energy-converting toy, with potential energy at the top of its arc, which is converted to kinetic energy as it is released and spins at the bottom of the arc. The spinning motion at the end of the string is known as "sleeping".
The "sleeping" process can be extended by minimising the friction between the yoyo and the string. This can be achieved by using a yoyo with a metal ball bearing, which reduces the friction between the axle and the string. Metal yoyos are better suited for this than cheap plastic yoyos, which may not respond as smoothly due to excessive friction.
However, even with a metal yoyo, the string can still get caught between the bearing and the yoyo, preventing it from spinning freely. This can be addressed by disassembling the yoyo, removing the string, and then reassembling the yoyo before reattaching the string. Additionally, over time, the string may become too tight, wrapped tightly around the axle, and prevent the yoyo from sleeping. In this case, the string may need to be loosened or replaced.
By addressing these issues and selecting a suitable yoyo, one can modify their yoyo to sleep longer.
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The yoyo is a trans-axle yoyo
The yoyo is an energy-converting machine. When released, it converts potential energy to kinetic energy. The spinning motion of the yoyo at the end of the string is called "sleeping". As the yoyo slows down, the springs overtake the metal balls and squeeze the axle. Eventually, this causes the yoyo to stop spinning and begin to climb up the string.
To wake the yoyo from its sleep, a flick of the wrist or some other movement can increase the friction between the string and the barrel, leading to the yoyo winding up the string. This process is known as "walking the dog". It is important to note that the stability of the yoyo while it is asleep is disturbed by the tug, causing it to awaken and return to the hand.
The sleeper yoyo trick is a basic trick that forms the basis for many other yoyo tricks. It involves making the yoyo sleep and then pulling it up before it stops spinning. The "elevator" trick is a variation of the sleeper, where you put your finger on the sleeping yoyo to make it curve and ride the string before pulling it up.
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Frequently asked questions
The motion of the yoyo spinning at the end of the string is called "sleeping". As the yoyo slows down, the springs overtake the metal balls and squeeze the axle. Eventually, this causes the yoyo to stop spinning and start climbing up the string.
A yoyo wakes up from its sleep when you tug on the string. This tug increases the friction between the inner barrel and the string, leading to the winding of the string.
The Sleeper yoyo trick is the basis for many yoyo tricks. It involves throwing the yoyo and letting it sleep.
Only certain yoyos are made for sleeping. Yoyos with metal bearings are built to spin, but cheap plastic yoyos may not respond as smoothly.
