How a Yo Yo Works 10, How a Yo Yo Works

It's simple. The law of conservation of energy. It is converted from potential energy to kinetic energy when it is dropped, and it is converted from kinetic energy to potential energy when it is rolled up.

Throw the ball down, increase the kinetic energy, to the bottom, the kinetic energy into other forms of energy, increase its centrifugal force, there are two clutches in the middle of the ball, you can take it apart to see, it is two long strips, one end is fixed, the other head has a weight, when the centrifugal force reaches a limit, the clutch is thrown off, the ball will rotate, when the centrifugal force decreases, the clutch is closed, but it will maintain the original state of motion, continue to rotate, then the rope will be wound around the shaft in the middle, the ball will rise.

When the rotation speed is greater than a certain value, the ball is separated from the shaft, and when the rotation speed is less than this value, the ball and the shaft are reported, and the ball is retracted with the shaft to rotate the line around the shaft.

The yo-yo stops at its lowest point and spins at high speed. So why did you pull it up as soon as you raised your hand? It seems amazing, but it's actually very simple.

Because of the friction of the cotton thread, when the person raises his hand, the cotton thread is no longer in a straight state, but the ball is spinning. First, due to the friction of the ball shaft with the wire, the thread is rolled up in a short section and fixed on the shaft. As long as the coefficient of friction is large enough, the ball spinning at high speed can roll up more lines, and the final effect is to complete the conversion of potential energy and return the ball to the hand.

To put it bluntly, the essence is that there is a little bit of friction at the beginning, and if it is an absolutely smooth line, it is impossible for the ball to return to the hand.

At the same time, the original answer of bs is kinetic energy to potential energy, which is obviously the conversion of rotational potential energy to gravitational potential energy.

For the clutch, the kind of high-end goods are for children to play, and the master does not use it, and it does not belong to the yo-yo principle.

Throw the stool spike ball down to increase kinetic energy. At the bottom, kinetic energy is converted into other forms of energy, increasing its centrifugal force.

There are two detached rollers in the middle of the ball, one end is fixed and the other end is weighted. When the centrifugal force reaches a certain limit, the clutch is thrown off and the ball turns. When the centrifugal force decreases, the clutch closes.

But it will maintain its original state of motion and continue to rotate. So the rope is wound around the shaft in the middle, and the ball goes up.

Here's how to play yo-yo

1. Long Sleeper: Raise your arm and use your wrist force to throw the yo-yo downward. Note: The palms of the hands are upward! After the yo-yo is thrown, keep your hands level with your palms facing down.

The yo-yo kept spinning at the end of the rope. If you want the yo-yo to spin longer, you can throw it down at 45 degrees! Pull your palm upwards and the yo-yo will spin automatically. This is the basis of all moves, so practice a lot!

2. Forward pass: Hold the yo-yo with your hands vertical, palms facing backwards and upwards, and throw the yo-yo forward. The yo-yo will automatically retract, and the palm of the hand will be buried in the ocha to catch it.

3. Escape (whirlwind sweeping leaves) Break away: This is a basic action with a horizontal fancy. Raise your right hand and place the yo-yo in front of your shoulder.

Wave your hand to throw the yoyo to the right while straightening your arm to bring the yoyo from right to left with centrifugal force. When the yo-yo crosses the body and reaches the level of the left shoulder, the ball can be pulled back with a rope.

4. Cradle Rock the Baby: Use the whirlwind of strength, in front of you, move your right hand forward and wrap the rope around the palm of your left hand. Grab the yo-yo rope 10cm with your right hand.

The right hand rises, and the palm of the left hand opens downward, allowing the rope to form a triangle. Swing the yo-yo back and forth with your right hand.

5. UFO UFO: Throw the yo-yo from the right shoulder to the lower left, and throw it hard to make the yo-yo rotate parallel to the ground.

Grab the rope 15cm-20cm away from the yo-yo with your left hand, lift the yo-yo up, and keep spinning sideways for 2-3 seconds. Let go of your left hand and throw the yo-yo upwards, pulling the rope with your right hand so that the yo-yo is retracted into your hand.

Here's how to play yo-yos:

1. Initial hypnosis: The hand that holds the ball first, the palm is up, and when you throw it down, the hand quickly turns it over, and then your yo-yo will be parallel there.

2. Whirlwind: Raise your arms and use your wrist strength to throw you down. After yoyo throws, keep your hands level and your palms down.

You will rotate at the end of the rope without stopping. Pull the palm upwards gently, and you will automatically turn around with you. This is a basic move, so you need to practice a lot.

Don't underestimate this move, it's a crucial step for you to become a master.

3. Sky tornado: first vigorously use the "power whirlwind" and slowly bring it close to the ground. Yoyo will walk forward, and when the swing is about to stop turning, pull your hand and withdraw it from your hand. Yoyo will slow down the rotation due to friction with the ground, so be careful to recoup Yoyo time.

4. Tengu Moth: Throw Yoyo backwards from the front to the circle between the two feet. When the yoyo is thrown to the back, pull the yoyo rope so that it touches the inner thighs. The yoyo groove and yoyo rope will mix with the fabric of the pants.

Tips for picking a yo-yo

1. Buy something that is easy to use. If you want to choose a good yo-yo, when choosing a yo-yo, it is best to buy those that are easy to use, especially when many children play yo-yo, they may be novices. Don't buy yo-yos that are particularly difficult to play at this time, otherwise your child will find them difficult to play and will never want to play again.

2. Consider security. If you want to choose a good yo-yo, you should also consider the safety of the yo-yo, especially some metal materials. If you are a newbie, it is best not to buy this yo-yo, you may injure yourself if you use it incorrectly.

3. Buy a yo-yo with a suitable **. If you want to choose a good yo-yo, when choosing a yo-yo, if your child has not played yo-yo, at this time you can buy a cheaper yo-yo, which is also good to play. If your child likes yo-yos and wants to upgrade to a professional level, you can buy a slightly more expensive and professional one.

If you just play with it as a toy, you can buy a cheaper one.