How to calculate tension in a rope?

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    Rope Tension
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SUMMARY

The discussion focuses on calculating tension in a rope using principles of static equilibrium. The key equations referenced include the balance of moments, specifically the equation "Moments clockwise = Moments anticlockwise." The user attempts to solve for tension (TD) by equating the moments, resulting in the equation 5*15 = TD, leading to a calculated tension of 75 Newtons. The discussion emphasizes the importance of free-body diagrams and equations of equilibrium in solving such physics problems.

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  • Understanding of static equilibrium principles
  • Familiarity with free-body diagrams
  • Knowledge of Newton's second law (F=ma)
  • Basic skills in solving algebraic equations
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Homework Statement


The link to the problem is here, sorry I couldn't put the diagram in so thought it was better to link!
I need help with both questions, the attempt is for the first question.
https://www.dropbox.com/s/2stb476hp738w9l/Physics question.jpg

Many thanks for any help!

Homework Equations


Moments clockwise=Moments anticlockwise
F=ma


The Attempt at a Solution


Moments clockwise=Moments anticlockwise
5*15=TD
75=TD
...?
Not sure first bit is right tho!
 
Physics news on Phys.org
In all of these problems, do the standard analysis:

1. Draw a free-body diagram and indicate all known forces and moments applied.
2. Write equations of equilibrium.
3. Solve the equations of equilibrium for the unknown forces and reactions.
 

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