The moment of force relative to the point. Definition, dimension, example and signs. Leverage
A moment of force is a rotational force created by a force vector relative to, for example, a point.
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The action of a moment of force relative to a point is determined by the product of force on its shoulder and is measured in Newtons per meter.
The unit of measurement is [N * m] or multiples, for example [kN * m].
The shoulder of the force is the normal distance from the point in question to the line of action of the force.
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The magnitude of the moment of force depends simultaneously on the force and its shoulder. An increase in any of the factors leads to an increase in the moment value.
The direction of the moment of force is determined by the position of the force relative to the point.
According to the rule of signs, the direction of the moment of force at which it creates a rotation counterclockwise is accepted as positive.
Accordingly, a negative sign will be at the moment at which the turn occurs in the course of an emergency.
If the line of action of a force passes through the point itself, the moment of this force is zero.
This video shows the formula of the moment of force on the plane, its definition and how to find the shoulder of force.
An example of the action of the maximum torque is the work of a wrench when turning the nut.
Calculation of the moments of force https://isopromat.ru/teormeh/obzornyj...
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