Recent content by Chris W

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    Solving the Eddy Currents Problem with a Pivot Pendulum

    the pendulum will experience the damping force due to the B field. I was wondering how to set up the equation for this problem. the effect of the damping force can be seen on this video. thank you Chris W
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    Hi guys. First off I would like to say thanks for the help that I got from all of you! you guys rock! as for the Eddy current problem... hmmmm I don't know why one is it.? is this problem that hard? hmmm wow ....(I didn't expect it!) or the explanation is bad? please let me know...
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    hmmmm... can you see the attachments? the FDB for the problem is drawn by hand. the class notes attachment is something that I think is needed to set up the problem I don't have to solve . just set up the equations please ... I need help here thanks Chris W
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    I hope you can see the attachments now you can see what I was trying to "draw" using the keyboard... lol
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    oh... I think the attachment are available now! just on time!
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    man... this won't work ... sorry I was trying to make a FDB using keyboard... all is massed up! let's wait! thanks
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    Fdb Thanks guys. Chris W Basically it looks like this: ------>pivot point | _______________________________________...
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    hmmm anyone ?? any hints? any ideas? please... and thanks you Chris W
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    I think my question is related to the notes that I have. Please see the attachment. Chris W
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    what I could conclude so far is that: when the pendulum makes that swing the area (A=w*h) of the bottom part of the pendulum is submerged in the B-field while swinging. this can be explressed as dA/dt vltage generated is = - n d\phi/dt and d\phi is changing while the A is outside...
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    Solving the Eddy Currents Problem with a Pivot Pendulum

    Hi All! I am working on the Eddy Currents problem. I was to set up the problem and derive some equations for the pivot pendulum with Eddy currents. Please see attachment. As you see the pendulum swings between max point ( just outside the B field) and enters the B field and then...
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    Solving Solenoids & Toroids: Show Approximation

    Thanks Patric! Yeah I noticed that something is wrong with r>>a and r>>b. All good man! Thanks! yeah a good sport! Chris W
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    Solving Solenoids & Toroids: Show Approximation

    I hope you can follow my math here ... anyone? please... is this correct? Thanks Chris W
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    Solving Solenoids & Toroids: Show Approximation

    Man... editing in this form is a challenge Toroid B = (μo i N)/(2 Π r) B = μo i n Solenoid B = (μo i n A L)/(2 Π r) B = (μo i N)/(A L)
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    Solving Solenoids & Toroids: Show Approximation

    Same here: Toroid Solenoid B = (μo i N)/(2 Π r) B = μo i n B = (μo i n A L)/(2 Π r) B = (μo i N)/(A L)