Mizukawa pointed to an apple and said, "How many ways do you say apples can be placed?" I think there are only two kinds, flat and sideways. When laid flat, you can also put a small object on top of it. When placed on its side, basically any macroscopic object cannot be placed. However, microscopic objects can. If an object changes shape, its stacking characteristics change accordingly. The shape force is an invisible and intangible force, and the magnitude is even more uncertain. According to everyone's opinion, how should the shape force be solved?

Liuzifeng said: Shape force can be divided into accumulation force and motion force. The accumulation force can be divided into placement force and loading force. In general, the accumulation force is inversely correlated with the cloud force. When the stacking force of an object is greater, the less force it is moving. The packing force of the sphere is almost zero, but the movement is very strong. I think there is a correlation between the shape force of the sphere and the shape force of the cube, and it is possible that it is equal.

Loading force is the basis of loading force, and loading force is the development of placement force. It is generally accepted that regular polyhedra are better than irregular polyhedra. Since the upload is divided into the same type of upload and different type of upload, the upload capacity is also different. In most cases, the loading force of the same kind of an object is greater than that of the heterogeneous. There is a special case of concave and convex loading, in which case the loading force is very high. Of course, the conditions for achieving bump upload are very harsh and do not have universal significance.

"We have learned about friction, but have we ever wondered why friction arises?" I think the reason for this is the shape. Objects can move if they are on a smooth ground plane, and friction is what prevents the object from moving. Speaking of which, I'm going to mention the athleticism of the six winds. Friction is carried out by frictional force, and the magnitude of friction determines the degree to which an object can move freely. In general, the greater the frictional force, the less the moving force. Whereas, friction is the basis of the packing force. Without friction, the build-up force cannot be formed. And I think that the greater the friction, the greater the accumulation force. Of course, the build-up force is not entirely determined by friction.

Margarita said: I also agree with the view of the six sons. However, I would like to add that the force of motion of an object is determined by the limit of rest. The limit of rest is determined by the size and shape of the object. In general, the larger the object, the greater the limit of rest. It is difficult for an object to break through the limit of rest, and there are far fewer opportunities for motion to be realized.

Then there's friction. I agree with Dueñas that the force of motion is determined by friction. However, friction is not a shape force. The friction force is affected by the microscopic shape of the ground and the shape of the bottom surface of the object. Textbooks say that friction equals gravity, and I don't think that's right. Friction is naturally related to gravity, but it is also related to the force of shape.

Mizukawa said: I also agree with the view of the six sons. There is a loading force in the shape force, which in turn can be divided into concave force and convex force. Since the concave force makes it easier to stabilize the loading system, our containers are all concave containers. The concave and convex force is a combination of concave and convex forces, but it is not the same as the electromagnetic force. We know that electricity can generate magnetism, and magnetism can also generate electricity. So, electricity and magnetism are generated at the same time. Concave bodies, however, do not produce convex forces. Therefore, neither concave force nor convex force is a type of concave and convex force.

Today's point of view is very good, and we need to continue to work on it. In order to ensure the quality of the discussion, it is also time to take a break.