Analyzing a Concurrent Force System with Looping Cords and Pulleys

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Homework Help Overview

The discussion revolves around a problem involving a concurrent force system with looping cords and pulleys, specifically analyzing the forces acting on two cylinders each weighing 400 lb, connected to weights of 200 lb and 400 lb. The goal is to determine the angles theta and the normal pressure N between the cylinders and a smooth horizontal surface.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss analyzing the forces acting on the cylinders and the necessity of showing work in the form of a vector diagram. There is a question raised about whether the problem is a statics problem, implying that the masses may not be accelerating.

Discussion Status

The discussion is ongoing, with some participants providing guidance on how to approach the problem, while others express uncertainty about the requirements for assistance. There is a mix of interpretations regarding the problem's nature and the expectations for showing work.

Contextual Notes

One participant acknowledges being new to the forum and expresses a lack of familiarity with the rules, which may affect the clarity of their contributions. There is an indication of time constraints due to upcoming exams.

jara
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Cord are looped around a small spacer separating two cylinders each weighing 400 lb and pass, as shown in the figure, over frictionless pulleys to weights of 200 lb and 400 lb. Determine the angles theta and the normal pressure N between the cylinders and the smooth horizontal surface.



I can't figure out how to solve it.

Thanks in advance!
 

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What have you tried?

Analyze the forces acting on the cylinders. What must the net force be?
 
To elaborate on Doc Al's comment, we expect students to show work when seeking assistance.

Simply write a vector diagram which shows indicates the tension in the cords acting on the axis of the two cylinders each of 400 lbs. Hint: each mass experiences a downward force related to weight.

It is not stated, but is this a statics problem, i.e. none of the masses are accelerating?
 
sorry, i didnt know... i think its obvious that I am just new here and I am sorry if i haven't read the entire terms and conditions whatsoever (i don't have time to read it... got lots of exams)

anyway, i already know how to solve it

i was confused at first but it was very easy.
 

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