Statics 7.19 - Determine the internal normal force, shear force, and moment at point C.

Question: Determine the internal normal force, shear force, and moment at point C.
Problem 7-19 from:
Engineering Mechanics: Statics, 14th edition
Russell C. Hibbeler
Thank you guys for watching.
Please let me know if you have any comments or suggestions and also if you have any other problem you would like to go over with.

[@timothysands5537]

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[@scrainbow1234]

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[@LearningbyTeaching]

You can do this. Be confident and you got this!

[@clintroberts2848]

Great break down of the problem! Thank you very much!

[@LearningbyTeaching]

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[@LearningbyTeaching]

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[@LearningbyTeaching]

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[@aznman85]

Why did you ignore the vertical tension in the rope connected to the beam?

[@LearningbyTeaching]

I understand why you make that question. The way I like to think about that specific problem would be to imagine yourself being the beam, the rope that is vertically its attached to your body, however, the pulley is the one that makes the tension and thats the reason why I only considered the tension going to the left.
It is a very vague explanation but my point is try to visualize the pulley system in real world and where would be the force going? I hope it helps!

[@HashemAljifri515]

​@@LearningbyTeachingNice explanation! I understand you dude but I initially considered the tension going to the right because of the reaction force acting on the rope from the support.. however,I literally understand the system if the pulley clearly from you now 😉

[@finnvasquez6749]

How did you know Vc was going down?

[@b0bsaget007]

Two ways:
1) Positive Sign convention for V on the right side of a member is pointing down. It points up if it's on the left side.
2) If you assumed it to be up instead, when you solve the equilibrium equation, you will end up with Vc being negative, indicating that the assumption that Vc was pointing up is wrong, and it is actually pointing down.

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[@LearningbyTeaching]

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[@LearningbyTeaching]

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