What is the Height at which the Resultant of Three Forces Acts?

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SUMMARY

The discussion focuses on determining the height at which the resultant of three forces acts, specifically in a physics context involving torque calculations. The key equation referenced is M = Fd, where M represents the moment, F is the force, and d is the distance from the pivot point. Participants express uncertainty about calculating the height and suggest that the resultant distance is likely less than 72 inches. A correction on the calculation of moments is also highlighted, emphasizing the importance of accurate addition in these computations.

PREREQUISITES
  • Understanding of basic physics concepts, particularly torque and moments.
  • Familiarity with the equation M = Fd and its application.
  • Knowledge of force vectors and their resultant calculations.
  • Basic arithmetic skills for verifying calculations.
NEXT STEPS
  • Study the principles of torque and how it relates to force and distance.
  • Learn about vector addition and how to calculate the resultant of multiple forces.
  • Explore examples of moment calculations in static equilibrium problems.
  • Review common mistakes in arithmetic when performing physics calculations.
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This discussion is beneficial for physics students, educators, and anyone involved in mechanics or engineering who needs to understand the application of forces and moments in practical scenarios.

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Homework Statement


Determine the height h above the base B at which the resultant of the three forces acts.
20150627_140043_zps9pcpzbnb.jpg


Homework Equations


M=Fd

The Attempt at a Solution


not sure how to get the height here. thanks
im assuming the distance they are asking is less than 72 in. but I am not sure how to find that.
I guess i would need to put my forces in a formula where d is not the variable.[/B]
20150627_134853_zpsqoca2qwb.jpg
 
Last edited:
Physics news on Phys.org
-31,680 in.lbs can't be right. Check your addition.
 
sweet thanks Nathanael!
 

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