Finding Moment About Any Point: Fixed Moment Value?

In summary, the formula to find the moment about any point involves using the force and distance from the point of interest. If the given moment is 50Nm, it remains fixed regardless of the point of reference. The parallel axis theorem can be used for finding the moment of inertia, but in this case, the given moment is for a moment of force in Nm.
  • #1
385sk117
50
0
The formula to find the moment about anypoint is
Fxr right? but if the moment is given, for example 50Nm
then the moment is fixed right? even if we change the regarding point
on the system, the given moment is 50Nm regardless what point we are regarding to.
Am I right?
 
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  • #2
Hi 385sk117! :wink:

If it's a couple (ie, a pair of equal and opposite forces), then yes, its moment is the same about any point. :smile:
 
  • #4
Hi Bob! :smile:
Bob S said:
Use parallel axis theorem. …

That would be for a moment of inertia …

this one is in Nm, so I 'm assuming it's a moment of force.
 

1. What is moment about any point?

Moment about any point is a measurement of the turning effect of a force around a specific point. It takes into account both the magnitude and direction of the force, as well as the distance between the point and the line of action of the force.

2. How is moment about any point calculated?

Moment about any point is calculated by multiplying the magnitude of the force by the perpendicular distance from the point to the line of action of the force. This distance is also known as the moment arm or lever arm.

3. What is the fixed moment value?

The fixed moment value is a specific moment about a point that remains constant regardless of the point of rotation. This value is useful in calculations involving multiple forces and points of rotation.

4. How is the fixed moment value used in calculations?

The fixed moment value is used in calculations to simplify the process of finding the total moment about a point. By using this value, the moment about any point can be found by adding or subtracting the fixed moment value from the moments of individual forces.

5. Why is it important to find the moment about any point?

Finding the moment about any point is important in analyzing the stability and equilibrium of objects under the influence of forces. It is also crucial in engineering and architecture, as it helps in determining the strength and stability of structures.

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