Help with finding mesh currents and nodal analysis

AI Thread Summary
The discussion revolves around difficulties in applying mesh current and nodal analysis in circuit problems, with the original poster expressing urgency due to an approaching deadline. Participants emphasize the importance of sharing attempted work to receive effective guidance. Recommendations for resources include Khan Academy tutorials, which provide helpful walkthroughs for understanding these concepts. The community encourages collaboration and problem-solving to aid in mastering the material. Engaging with these resources and the forum can enhance understanding of circuit analysis techniques.
bobob12456
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Homework Statement
Please can I have some help
Relevant Equations
mesh current and nodal
Hi there, I have managed to work out the kirchoff's law bit but for the other two bits I just cant get started as I can get my head around it, its due in on monday I dont know why I left it so late!
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Welcome to Physics Forums. The way homework help works - you post what you have attempted, then we guide you towards a solution.
Can you post what equations you have set up?
 
Khan Academy has some good tutorials on this subject.
 
Thread 'Have I solved this structural engineering equation correctly?'

Thread 'Have I solved this structural engineering equation correctly?'

Hi all, I have a structural engineering book from 1979. I am trying to follow it as best as I can. I have come to a formula that calculates the rotations in radians at the rigid joint that requires an iterative procedure. This equation comes in the form of: $$ x_i = \frac {Q_ih_i + Q_{i+1}h_{i+1}}{4K} + \frac {C}{K}x_{i-1} + \frac {C}{K}x_{i+1} $$ Where: ## Q ## is the horizontal storey shear ## h ## is the storey height ## K = (6G_i + C_i + C_{i+1}) ## ## G = \frac {I_g}{h} ## ## C...
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