How to calculate tension in a rope?

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    Rope Tension
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To calculate tension in a rope, start by drawing a free-body diagram to visualize all forces and moments acting on the system. Apply the principle of moments, ensuring that the sum of clockwise moments equals the sum of anticlockwise moments. Use the equation F=ma to relate forces and acceleration if applicable. The initial attempt calculated tension as TD = 75, but verification of the approach is necessary. Following these steps will help in accurately determining the tension in the rope.
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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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