A pair of opposing forces, here the three elements of two forces may be the same Why is this sentenc

The three elements of force are magnitude, direction, and point of application. A pair of interacting forces, according to Newton's third law, are equal in magnitude and opposite in direction, so they cannot be the same only in terms of direction.

For example, if a book is placed on the table, the pressure of the book on the desktop and the support force of the desktop on the book are a pair of interaction forces, but the pressure of the book on the desktop acts on the desktop, and the support force of the desktop on the book acts on the book, so the action point cannot be the same.

To sum up: a pair of interacting forces, equal in magnitude and in opposite directions, act on different objects.

Relative force? Interaction force. The three elements of force are the magnitude direction of the application point.

When an object acts on another object, it is also subjected to a force exerted on it by another object, and this force becomes an interaction force. So these two forces must be in opposite directions. So this sentence is wrong.

The three elements seem to be the size, direction, and object of action, and if so, the object of action must be different.

I haven't taken the college entrance examination for a long time, I forgot it, it may be wrong, you look at the book.

Newton's 3rd law: Any force will always have an opposing force. (sic). So the direction is always the opposite.

The conditions for the interaction force to be satisfied are: equal in magnitude, opposite in direction, and different in the point of application.

Therefore, it cannot be the same.

The "three elements" of force refer to the point, magnitude and direction of a force; When two forces have the same point, magnitude, and direction of action, or should be two "equal forces", either of the two forces will have exactly the same effect on the object being forced.

Usually "the same force" refers to the classification of "force", for example, "pull", "gravity" or "buoyancy", "resistance", etc., and the "three elements" of two identical forces are not necessarily the same.

Wrong! If there are two ropes tied to the object in the same place with the same amount of force, pull the object in the same direction. Then the force exerted by these two ropes on the object is exactly the same three elements, then, these two forces are not the same force.

Answer: a Equilibrium force should be equal in magnitude and in opposite directions, note that the direction is opposite.

Therefore, two forces with the same three elements, i.e., the same direction, are not equilibrium forces. , 8, the three elements of a force: magnitude, direction, and point of application.

Equipoise is required: the agitation is the same size, the opposite direction, and the same point of action!

So choose a, 1, probably a

Since they are all the same, they should be in the same direction, the same size, and the same point of action. ,1,Answer; aThe three elements of both forces are the sameThe direction is the same, and the equilibrium force is that the direction should be opposite, 0, a must not be a balancing force, 0, an object is acted on by two forces at the same time, and the three elements of these two forces are the same, then these two forces.

a Definitely not a balance force.

b Must be a balance force.

c It may be that the balance is bright and noisy.

d Insufficient conditions to judge.

Stress point. Direction.

The magnitude of the force is all the same.

Equilibrant. Several forces acting on the same object, if the object is still or becomes in a state of stationary or uniform linear motion, then the net force of these forces is zero, and we say that these forces are balanced.

Judge balance.

1. Two forces act on the same object. 2. Each pair of forces or each pair of resultant forces is in the same straight line, opposite in direction, and equal in magnitude. (i.e. the net force is zero) (equal size, same line, opposite direction) 3. The object is in a state of stationary or uniform linear motion.

and interaction forces).

Classification of Equipoise.

Equilibrium forces are also divided into multi-force balance and two-force balance, and the conditions for two-force balance are: the two forces are equal in magnitude, opposite in direction, acting on a straight line, and acting on the same object. Multi-force equilibrium is similar.

The difference between action and reaction in this section is the stool tremor force and the balance force.

A pair of equilibrium with"Force, Kai, rough vertical and reaction force"The common feature of the two forces is that both forces are equal in magnitude and opposite in direction, acting on the same straight line. Because of this, students often confuse these two big concepts.

Again, the difference between them is obvious: first of all, the essential question of the two concepts is different. The action force and the reaction force describe the law of action between two objects, A has a strong effect on B, and B must also have a strong effect on A; Two-force equilibrium describes the characteristics of two forces in which an object is in equilibrium under the action of two forces.

Secondly, the nature of the two forces is the same, either gravity, elastic force, friction and so on. However, the equilibrium of two forces is not, as long as the two forces are satisfied to act on the same object, equal in magnitude, in opposite directions, and acting in the same straight line, it is a balanced force, regardless of the nature of the two forces. The re-action force and the reaction force are simultaneous, generating at the same time, changing at the same time, and disappearing at the same time; Two-force balance does not have this characteristic.

This paragraph is necessary to maintain balance.

1.The magnitude of the force is the same 2Opposite direction 3Acting on the same straight line 4Acting on the same object.

What force is equilibrium in this paragraph?

An object is acted upon by two forces and remains at rest or in a state of uniform linear motion, these two forces are a pair of balanced forces, called two balanced forces! Conversely, "If an object remains at rest or in a straight line at a uniform speed, the force on it must be balanced (or not)".

Answer C Analysis: To distinguish whether two forces are flat or balanced, it is necessary to see whether these two forces have the conditions for the balance of two forces: equal size, inverse, collinear, and common According to the three elements of the two forces told are the same, combined with the conditions of the balance of the two forces, determine whether the two forces are equilibrium forces

Answer: The three elements of the two forces are exactly the same, which means that the direction of the two forces is also the same and the direction of the equilibrium force is opposite, so it can be seen that the two forces must not be the equilibrium force

To sum up, C

Comments: The three major elements of the two forces are the same, which can reflect the two forces: equal size, collinear, common matter, and codirectionality, but it is inversely inconsistent with one of the four conditions of the equilibrium of the two forces

A pair of equilibrium.

It is two forces of equal magnitude and opposite directions to the same object, which must be the force exerted by two other objects on that object, so that the nature of the action may be the same or different;

A pair of action and reaction forces.

It is the interaction of two objects, and the nature of action must be the same, so the nature of the force must be the same.

To put it simply, the nature of force refers to the cause of the force, that is, the form of action, whether it is attraction, or deformation, or friction, etc.

Forces are classified by nature, that is, by the form of action, gravity: generated by attraction; Elasticity: Generated by deformation; Frictional force.

Produced by friction.

The interacting forces are created and disappear at the same time.

It is the force between two or more objects. For example, if object A acts on object B, then B immediately has a force acting on A, and the two cannot exist independently.

Whereas, a balanced force is a force acting on the same object. If the object a is stationary on a level ground. Supported by gravity and the ground for him.

These two do not appear at the same time and disappear at the same time. If he picks up object a, then he is subjected to gravity, and the forces of man on him are not of the same nature.

If the three elements of two forces are the same, then the two forces must not be equilibrium. Reason, because the same direction can only be superimposed, not canceled, so it is not a balanced force.

If the three elements of the two forces are exactly the same, then the magnitude of the two forces is equal, the application point is the same, and the direction is the same, which does not meet the condition that the direction is opposite in the equilibrium force condition, so the two forces must not be equilibrium forces

Therefore, choose B

The three elements of the two forces are exactly the same, which means that the direction of the two forces is also the same and the direction of the equilibrium force is opposite

Therefore, the bright match is B