Is torque a binding force
The moment of force is the physical quantity of the rotation of an object. It can be divided into moment of force to axis and moment of force to point. That is: M = lxf. Where l is the distance vector from the axis of rotation to the point of force and F is the vector force; The moment is also a vector
the moment of a force on an axis is the physical quantity that the force acts on an object to rotate about an axis, and its magnitude is equal to the proct of the component of the force on the plane perpendicular to the axis and the vertical distance from the line of action of the component to the axis. The moment of a force to a point is the physical quantity of the rotation action of a force to an object around a certain point, which is equal to the vector proct of the position vector of the force acting point and the force vector
extended data:
Properties of moment:
1. The moment of force F to point O is not only determined by the force, but also related to the position of moment center. The moment varies with the position of the moment center
When the force is zero or the arm of force is zero, the moment is zero When the force moves along its action line, because the magnitude, direction and arm of the force do not change, the moment does not change The algebraic sum of the moments of two mutually balanced forces at the same point is equal to zerowhen an object is in static equilibrium, the static force is zero and the net moment to any point is zero. Moment is the derivative of angular momentum with time, just as force is the derivative of momentum with time. The angular momentum of a rigid body is the moment of inertia times the angular velocity
1. The meaning is not the same
the moment of force is the physical quantity of the rotation effect of the force on the object
force is the action of an object on an object
2. Different units
unit of moment: n · m
unit of force: n
force is one of the basic concepts in mechanics and the external cause of acceleration or deformation of an object. In dynamics, it is equal to the proct of the mass and acceleration of the object
When the concept of force forms a simple history push-pull object, we can intuitively realize the fuzzy concept of force. The action of force is reflected in the movement of the pushed and pulled object and the graal slowing down of the sliding object e to friction and finally stopping. The ancient Chinese Literature "Mojing" summed up this concept as "force, where form comes from, striving also" That is to say, force is the reason that makes the object move vigorously. Therefore, force is naturally reflected in human consciousness. However, people have experienced a long struggle from the intuitive awareness of the concept of "force" to the strict scientific definition of "force" In the west, before the concept of force was put forward in physical science. First of all, there is a debate in philosophy. Thales and others of the cosmological School of guchia thought that nature is living, and like the human body, it is a living tissue moving by itself. Under the guidance of this philosophy, there is no proposition of the origin of motion, and there is no concept of "force" Later parmnides put forward the view that motion does not exist from logical reasoning. His opponents put forward that the source of movement is "force" to prove the existence of movement. This means admitting the original causal view that "force is cause and motion is result" Plato's concept of force is basically immaterial. He thinks that the reason why nature endows the nature of movement is because there is an immortal living spirit. The last source of all forces in nature is the hidden soul of the world, which is the root of all physical activities. Of course, this metaphysical view is difficult to explain the kind of motion proced by gravitythe force balance of the object does not mean the moment balance, so the object is not necessarily static
for example, a fan has two fan pages, you use two hands to hold the end of the fan page and rotate in one direction, force analysis shows that the force of your two hands is the balance force, but the fan page turns up, because the force of your hands is not in a straight line, This proces torque
torque is the effect of force making an object rotate
in the previous example, the magnitude of torque is the force of your hand multiplied by the vertical distance from the rotating shaft to the action line of your hand
as you will learn in college physics, force analysis of any object includes force and moment
Definition: the physical quantity of the rotation effect of force on an object