What is the direction of the resultant force and how to understand the direction of the resultant fo

The resultant force is defined as the resultant force of several other forces if the effect produced by one force is the same as that produced by several other forces. The diagonal appears after making a vector parallelogram, and the direction of the diagonal is the arrow pointing after the addition of several component vectors. If you still don't understand, it is recommended to learn the addition and subtraction of vectors in the first year of high school.

Since all the forces experienced by the object, all the forces are combined into a single force by the parallelogram rule, and the direction of this force is the direction of the resultant force.

The direction of the resultant force is the direction of the final force after multiple forces are combined with vectors

If an object is subjected to multiple forces, the effect of these forces acting together is the same as if they are replaced by a single force. Then this substituted force is the resultant force of these forces. The direction of this force is the direction of the resultant force.

The direction of the resultant force is the direction of the resultant force produced by the synthesis of several individual forces.

In general, the direction of the resultant force can be described in the following ways:

1.Bearing description, due east, due west, etc.

2.The angle between it and the known force that synthesizes it.

You don't just learn how to synthesize two forces on the same line, do you?

That doesn't seem like a good question!

The direction of the resultant force should refer to the direction after the synthesis of several forces, if it is two forces, the direction of the diagonal is the direction of the resultant force.

Simply put, multiple forces you emit have the same effect as a single force.

The direction of the resultant force refers to the resultant force of several forces in magnitude and direction.

It is the direction in which several forces combine the effect of one force.

The vector and direction of several forces

Understand vectors and sprinkle '''

The actual direction in which the force is applied to the object.

The angle between f1 and f2 , then b=( according to the cosine formula.

cos b=(ab 2 + bc 2-ac 2) 2ab*bc, converted to f1, f2, f, -, cos( -f1 2+f2 2-f 2) 2f1f2, f 2=f1 2+f2 2+2f1f2cos.

f=√（f1^2+f2^2+2f1f2cosα）<

How to judge the direction of the resultant force is as follows:

The direction of the resultant force is judged according to the magnitude and direction of each component or the direction of acceleration.

Extension: If the effect of several forces acting on a particle is the same as that of a force f, then this force f is called the resultant force of several forces (equivalent method). The direction of force f is the direction of the combined force of several forces.

Force is a vector quantity, and the resultant force refers to the vector sum of multiple forces acting on the same object together. The resultant force is a vector quantity, and the addition and subtraction of vectors satisfies the parallelogram rule and the triangle rule.

The direction of force f is the direction of the combined force of several forces. Force is a vector quantity, and the resultant force refers to the vector sum of multiple forces acting on the same object together. The resultant force is a vector quantity, and the addition and subtraction of vectors satisfies the parallelogram rule and the triangle rule.

If the two forces are not collinear, the direction of the diagonal is the direction of the resultant force. If the direction of the two forces is the same, then the resultant force is equal to the sum of the two forces and the direction does not change.

If the direction of the two forces is opposite, then the resultant force is equal to the difference between the two forces, and the direction is the same as that of the force that is larger. If the two forces are equilibrium forces (equilibrium forces of equal magnitude and opposite directions), the resultant force is zero. ∑f=0

The direction of the net force on an object moving in a curvilinear motion is not only at an angle to its velocity, but always points to the "inside" of the curve. In a curvilinear motion, the instantaneous velocity direction is along the tangent direction of the point, or the velocity is always tangent to the path at any moment.

Moreover, the trajectory of motion is always deviated in the direction of the resultant force, in other words, that is, the angle between the direction of velocity and force must contain the path of the trajectory. Some students summarized as: the force speed clamp path, the speed and diameter are always tangent.

The idea of motion synthesis and decomposition is to decompose the curvilinear motion into two rectilinear motions perpendicular to each other, so that the knowledge of rectilinear motion can be used to solve the curve problem. The correlation between the combined motion and the sub-motion is prone to error.

Categories: Education, Science, >> Learning Aid.

Problem description: I am a junior high school student.

I haven't learned it yet, but I'm curious to know, so please write in detail.

Analysis: From a one-dimensional perspective, that is, when the direction of the resultant force is on the x-axis of the straight line in the direction of motion. It doesn't matter.

When the net force is 0, the object is at rest or moving at a uniform speed, then it is maintaining its original direction.

When the resultant force is the same as the direction of motion, the object is accelerated and moved; On the contrary, make a deceleration motion. Then it still doesn't matter.

Then, when viewed from two dimensions, it can be decomposed into perpendicular to the same direction of motion on the plane. That is, the XY coordinate system is established with this code object as the origin. The opposite of the same direction of motion is the component on the x-axis, which is the same dimension, and does not change the direction of motion; The perpendicular component, i.e. on the y-axis, changes the direction of the object's motion.

How much to change, you can calculate the horizontal and vertical speeds, and you will know the angle as soon as you find the angle.

And then from the three-dimensional point of view, it's just a two-dimensional superposition. Get the xyz coordinates and see it clearly.