- #1
NoobeAtPhysics
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Homework Statement
Do the following have equal moments about A?
Homework Equations
T=rf
The Attempt at a Solution
Yes because using L*cos(30), they will be the same?
What is your reasoning?
Equal Moments at A: Reasoning and Calculation
- Thread starter NoobeAtPhysics
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In summary, the conversation discusses whether two equations have equal moments about point A. The equations in question are T=rf and τ=rFsinθ. The person asking the question believes they are equal because they both use τ=rFsin30, but Tanya S corrects them by explaining that the equations are not the same and that the correct equation for moment is τ=rFsinθ or τ=r times the component of force perpendicular to the line joining A and the point of application of force.
Do the following have equal moments about A?
T=rf
Yes because using L*cos(30), they will be the same?
What is your reasoning?
- #2
Tanya Sharma
- 1,540
- 135
NoobeAtPhysics said:
Your reasoning is incorrect ...
τ = r×F
τ = rFsinθ
or τ = r times (component of force perpendicular to line joining A and point of application of force )
So what is τ ?
- #3
NoobeAtPhysics
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They both use τ = rFsin30 right? That means they are equal! Right?
- #4
Tanya Sharma
- 1,540
- 135
Right...
Last edited:
- #5
- 41,507
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"Use" is a strange word there. "Supply" perhaps. Anyway, you asked whether your reasoning was correct, and Tanya S was right in reply, that your reasoning was incorrect (though you got the right answer).NoobeAtPhysics said:
Related to Equal Moments at A: Reasoning and Calculation
1. What is "Equal Moments at A: Reasoning and Calculation" all about?
"Equal Moments at A: Reasoning and Calculation" is a scientific concept that refers to the equilibrium state of a system at a particular point or location, also known as point A. It involves reasoning and calculation to determine the equal distribution of forces acting on the system at point A.
2. Why is it important to consider equal moments at A in scientific experiments?
Equal moments at A are important to consider in scientific experiments because they help to ensure the accuracy and reliability of the data collected. By accounting for all the forces acting on the system at point A, researchers can make more accurate conclusions and predictions about the behavior of the system.
3. How do scientists calculate equal moments at A?
Scientists calculate equal moments at A by considering all the forces acting on the system at point A, including both external and internal forces. They then use mathematical equations and principles, such as the principle of moments, to determine the equal distribution of these forces.
4. What types of systems or experiments require the consideration of equal moments at A?
Many types of systems or experiments require the consideration of equal moments at A, including mechanical systems, electrical circuits, and chemical reactions. Any system that involves multiple forces acting on a single point or location will require the calculation of equal moments at that point.
5. Can equal moments at A ever be achieved in real-life systems?
In theory, equal moments at A can be achieved in real-life systems. However, in practice, it is often difficult to achieve perfect equilibrium due to factors such as external disturbances, imperfections in the system, and limitations in measurement accuracy. Scientists strive to minimize these factors as much as possible to achieve the closest approximation to equal moments at A.
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