Using 0 Moment to find a force.

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SUMMARY

To find a zero moment at a point in a system with two tension forces, one must resolve the forces into their components and sum the moments about the specified point, denoted as O. By applying the equilibrium condition that the total moment around point O must equal zero, one can derive an equation to solve for the unknown tension value, T. This method is essential in static equilibrium analysis for structures subjected to multiple forces.

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  • Understanding of static equilibrium principles
  • Knowledge of force resolution into components
  • Familiarity with moment calculations
  • Basic skills in algebra for solving equations
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Students and professionals in engineering, particularly those focusing on structural mechanics and static analysis, will benefit from this discussion.

weedannycool
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how do you find a 0 moment on a system. for example if i had a block with two forces in tension either side and i know 1 tension value and i want to find the other which will cause zero moment at a point ( say O ). any ideas??

Thanks

__________

Daniel
 
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please more expplaination
 
i'll draw a pic. i want to find T so there is zero moment at O. but the block is suported
 

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hope you can understand that :/
 
Resolve the forces into components and sum the moments about point 0. You should end up with enough equations to solve for T.

CS
 
I have encountered a vertically oriented hydraulic cylinder that is designed to actuate and slice heavy cabling into sections with a blade. The cylinder is quite small (around 1.5 inches in diameter) and has an equally small stroke. The cylinder is single acting (i.e. it is pressurized from the bottom, and vented to atmosphere with a spring return, roughly 200lbs of force on the spring). The system operates at roughly 2500 psi. Interestingly, the cylinder has a pin that passes through its...

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