How to calculate the moment conversion 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
M = f * l
where m is the moment of force F on the rotation axis O. if the object has the effect of anti clockwise rotation, it is defined as positive moment, otherwise it is negative moment
unit: in the international system of units, the unit of moment is Newton * meter, abbreviated as Newton * meter, symbol: n * m
in physics, moment refers to the tendency of force to make an object rotate around the axis of rotation or fulcrum. The unit of moment is Newton meter. The Greek letter is tau
The concept ofmoment originated from Archimedes' research on lever. Rotational torque is also called torque or torque. Torque can change the rotational motion of an object. Pushing or pulling involves forces, while torsion involves moments. The moment is equal to the cross proct of the radial vector and the applied force
equilibrium conditions:
(1) the equilibrium of a body with a fixed axis of rotation means that the body is stationary or rotates uniformly around the axis of rotation
(2) the equilibrium condition of the object with fixed rotation axis is that the resultant moment is zero, that is, the sum of clockwise moment is equal to the sum of counter clockwise moment General equilibrium condition:the resultant force is zero and the resultant moment is zero at the same time, that is ∑ FX = 0, ∑ FY = 0, ∑ M = 0
torque:
(1) arm of force (L): the vertical distance from the rotation axis to the action line of force
(2) moment (m): M = L × F. The unit is n * M
(3) the moment describes the rotation effect of force on the object(4) torque is a vector, only clockwise and counterclockwise directions are considered in middle school. It is usually specified that the torque is positive counterclockwise and negative clockwise
extended data:
according to the international system of units, the unit of energy and work is Joule, which is defined as 1 Newton meter. But Joule is not a unit of moment. Because energy is a scalar of the distance of the proct of the force points; The moment is the pseudo vector of the distance cross proct force. Of course, the same dimension is not only a coincidence; It takes 2 * PI joules of energy to apply a 1 N-M moment to a full revolution
when an object is in static equilibrium, the static force is zero and the net moment to any point is zero. For two-dimensional space, the requirement of balance is:
x, Y direction resultant force is 0, and resultant moment is 0
Properties:1. The moment of force F to point O is not only determined by the force, but also related to the position of the 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 zeroTorque: the proct of the force and the arm of force is called the torque of the force on the axis of rotation
that is: M = f * l
where m is the moment of force F on the rotation axis O. any moment that causes the object to rotate in a counter clockwise direction is defined as a positive moment, and vice versa
Unit: in the international system of units, the unit of moment is Newton * meter, abbreviated as Newton * meter, symbol: n * m
torque: the proct of force (f) and arm of force (L) (m). That is: M = f · L, When an object rotates around a fixed axis, there are only two possible directions for the torque, so it can be expressed by sign; Therefore, the resultant moment of several torques acting on a rotating body with a fixed axis is equal to their algebraic sum. This algebraic sum will determine whether the body is in equilibrium or non-equilibrium.
in the international system of units, the unit of torque is Newton meter. Note that it cannot be written as Joule. Joule is the unit of energy, Torque and energy are two different concepts.
in the calculation of torque, attention should be paid to the vertical distance from the axis of rotation to the line of action of the force in the plane perpendicular to the axis of rotation
1kg force. M = 9.81n. M, which is about 10N. M
how many kg of force is generally said, such as 100kg, that is, 100kg of force
to convert the unit of torque into nm:
the kilogram of force * g (acceleration of gravity) is about 9.8
generally, the kilogram of force * 10 is converted into nm, which is easy to convert
extended data:
nm torque is the torque proced by a car
definition: unit of moment Moment: proct of force and arm)
formula: 1 Newton × 1 m = 1 nm Newton: vector, meter: scalar)
note: This is cross proct, not dot proct
100kg is a force of 100kg. If it is converted into the unit of moment in nm, the kilogram of force * g (acceleration of gravity) is about 9.8. Generally, the kilogram of force * 10 is converted into nm, which is easy to convert
In physics, torque refers to the tendency that the force makes the object rotate around the axis of rotation or fulcrum. The unit of moment is Newton meter. The Greek letter is tau. The concept of moment originated from Archimedes' study of lever
rotational torque is also called torque or torque. Torque can change the rotational motion of an object. Pushing or pulling involves forces, while torsion involves moments. The moment is equal to the cross proct of the radial vector and the applied force
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
please refer to the "mechanical design manual" for details
required torque: 196.2 * 20 / 2 / 1000 = 1.962 nm, if the wrench length is 20cm, the required force is: 1.962 / 20 * 100 = 9.81 nm, that is 1kg
determine the tightening torque according to the wrench length, wrench length: l (m), tightening force: F (n), tightening torque: m (nm); The formula is as follows: M = LF
