Recent content by cavalieregi

Don't worry I worked it out.

So could you give me a rough outline of your method.

Homework Statement Homework EquationsThe Attempt at a Solution 1. I first found the angles each cable made with the pillar. 2. With these angles I found the components of the forces in the x and y direction. 3. So ∑Fx and ∑Fy were found. 4. Then using these values I equated...

-29V RHS and 10V LHS

Its okay I have worked it out I just am unsure why the voltage drop over the 4 ohm resistor is from left to right.

So how would I determine the direction of the voltage drop without knowing the direction of the current due to the passive sign convention.

Say for example you had the following circuit. Since it is hard to determine which source will have a bigger influence on current I am unsure of how I would determine which way the current would flow between each node.

On diagram it has (-) for non inverting input.

Cool, just wondering why it is a negative terminal ?

I got VC = 2.5 V

Homework Statement For an input potential (Vin ) which is a 1V (peak) sinusoidal source. Calculate V1 and Vout Homework Equations - The laws for an op-amp - NVM The Attempt at a Solution Here is my attempt not sure if correct.

I figured Va = Vb + 15 and it worked!

Thanks I have now managed to solve this!

Simplified Circuit. This is what I have done. I think I have made a mistake somewhere. NOTE: VB is meant to be negative at end where = 76.67V

Actually I think I have it just wait.