What kind of spinning top spins best? What are the characteristics of a spinning top spinning at hig

Of course, it's a good rotation with a large angular momentum. What is angular momentum? In fact, it is a kind of energy, which is the mass of a rotating object multiplied by the velocity, hehe, basically about the same as inertia.

How to increase the angular momentum of the gyroscope, in the case that the speed cannot be improved, the only way to increase the mass is to increase the weight. There is another problem to pay attention to, there is also a way to increase the mass of the rotating object, because of the problem of rotating a center and the force arm, the popular point is like the flywheel principle we usually see, adding the mass to the center does not have much effect, and it should be added to the outer ring. For example, it would be good to add an iron hoop.

Of course, there is another way, which is to lengthen the arm and increase the outer diameter of the gyro, just like the one produced by many factories now, with two long wings stretched out.

The spinning top is very balanced and does not fall to the ground, because the rotation of the top itself causes its center of gravity to constantly change, thus canceling out the tilt caused by gravity, so that the top can maintain balance.

The spinning top with large angular momentum rotates well, and the spinning top at high speed is very balanced and will not fall to the ground, because the rotation of the spinning top itself makes its center of gravity constantly change, thus counteracting the tilt caused by gravity, so that the gyroscope can maintain balance.

Let's see what others have to say.

The spinning top has a stable axis when it rotates rapidly, especially at high speeds. Scientists have used this feature to make a gyroscope, no matter how ships, spaceships and satellites move, as long as the gyroscope is rotating at high speed, it can point in a direction, and the direction can be determined by this method. Figure skating, gymnastics, etc., also use this principle of spinning tops.

1. Fixed-axis property. When the gyroscope rotates, the moment of the external force acting on it is zero, and it can be seen from the angular momentum theorem that the angular momentum of the gyroscope for the fulcrum is conserved, and the direction of the angular momentum remains unchanged in motion. Each point on the top rotates in a circle in a plane perpendicular to the axis of rotation.

According to the law of inertia, every point tries to keep itself out of the circle along a tangent of the circumference at any time, and every point tries to keep itself in the plane perpendicular to the axis of rotation when it is in motion.

2. Precession. When the gyroscope rotates at high speed, the central axis of the gyroscope seems to be rotating around an erected pole, and the phenomenon of rotating the axis of the object at high speed in space is called precession. This is because when the gyroscope is subjected to the moment of gravity on the fulcrum, according to the angular momentum theorem, the vector direction of the angular momentum follows the rotation of the gyroscope, tracing a cone.

3. Nutation. It is impossible for the top to spin endlessly, and when the top starts to fall slowly due to friction, the motion done is nutation. Nutation refers to the change in the inclination of the angular momentum around the axis of rotation between two angles when a rigid body is precession.

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Gyroscopic rotation is related to inertia and gravitational factors. The spinning top that rotates at high speed will cause a slight shaking, but the axis of its rotation axis remains the same, while the stationary spinning top will tumble

What factors are associated with gyroscopic rotation? What kind of spinning top spins best? What are the characteristics of a spinning top spinning at high speed?

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Gyroscopic rotation is related to inertia and gravitational factors. The spinning top that rotates at high speed will cause a slight shaking, but the axis of its rotation axis remains the same, while the stationary spinning top will tumble

Gyroscope refers to a symmetrical rigid body with a fixed point and high-speed rotation around the axis of symmetry in engineering. Its axis of rotation is called the gyro spindle. There are various forms of gyroscopes due to the different forms of support, rigid body shapes, and mass distributions.

The spinning top has a high rotational speed, so it has some special dynamic features.

The square is placed in the middle position, the triangle is placed at the bottom, and the circle is placed at the top, and the three can be strung together with matches.

The spinning top is the earliest entertainment tool of the Han people, also known as Dhara, and is called in Hokkien language"Dry music", which is called in the north"Bing"or"Fight the old cow of the round god"。The shape is rounded in the upper part and pointed at the bottom. In the past, it was mostly made of wood, but in modern times, it is mostly made of plastic or iron.

When playing, you can wrap the rope and draw the rope vigorously to rotate upright. Or use the spring's elastic force to rotate. The traditional ancient liquid spinning top is roughly an inverted conical shape made of wood or iron, and the gameplay is to split it with a whip.

In modern times, a wide variety of materials (e.g., steel, plastic, etc.) and shapes (e.g., lumpy) have emerged.

Of course, there are some more"Hand twist the top"Very popular. Spinning top is a very familiar toy for teenagers. Popular all over the world.

China is the home of the spinning top. Stone spinning tops have been excavated from Neolithic sites in Xiaxiangxiao County, Shanxi, China. It can be seen that there are the least number of spinning tops in our country.

Four or five thousand years of history.

When the top rotates, it not only rotates around its own axis, but also makes a conical motion around a vertical axis. That is, one side of the top is made around its own axis"Rotation", one side is made around the vertical axis"Precession"。That is, the top does not stand perpendicular to the ground, but has a certain deviation from the ground normal, and has some inclination to the ground.

So the moment of gravity on the gyroscope is not zero, and the precession angular momentum of the gyroscope can balance the action of the gravitational moment, so the gyroscope does not fall to the ground when it rotates. The spinning top is made around its own axis"Rotation"determines the size of the spinning top swing angle. The slower the rotation, the greater the swing angle, and the worse the stability; The faster it rotates, the smaller the swing angle and therefore the better the stability.

And the shape of the top also has an effect on the precession of the top. This is similar to how people ride bicycles, except that one moves in a straight line and the other moves in a conical curve.