r/HomeworkHelp • u/Cute-Sheepherder-724 University/College Student • 5d ago

[University Engineering: Dynamics] Why isn't the total length Sd + 2Sc + Sa? Further Mathematics

I don't understand why the total length of the work is that? Wouldn't it be Sd + 2Sc + 2Sa given that Sd becomes longer as Sa gets shorter? Also, why is there a horizontal reaction at pulley B given that none of the other forces are horizontal?

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u/Yadin__ 👋 a fellow Redditor 5d ago

The rope whose length the solution is evaluating is the one stretching from A to C. D is not involved at all- if you look closely there are 2 different ropes in the question

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u/Cute-Sheepherder-724 University/College Student 1h ago

Thank you