Recent content by TopherF

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    Wire loop falling out of a magnetic field

    Assuming that the loop is large enough for it to reach vterm. Otherwise looking back at my DE, you are right
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    Wire loop falling out of a magnetic field

    Could you explain this a little more? Will it just approach the terminal velocity in limit? Because there must me a point at which the acceleration due to the induced force is equal to the acceleration of gravity, so the net acceleration is zero, so it must be moving at some constant speed, even...
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    Wire loop falling out of a magnetic field

    Okay, I overlooked that. Thanks. I think I may have figured something out. Would you tell me if mathematically this is legal and this process makes sense to you in the context of this problem? I took the bottom equation from my previous reply and substituted ##y=vt##. Then, I know that the...
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    Wire loop falling out of a magnetic field

    Using the differential equation ## \frac{dv}{dt}=g-\gamma v## I used separation of variables and integrated from 0 to ##t## to get ## v-v_{o}=(g-\gamma v)t ## and knowing ##v_{o}=0## i got the equation ##\frac{dy}{dt}=(g-\gamma v)t## so separating variables and integrating again I get that...
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    Wire loop falling out of a magnetic field

    I got that ##v_{term}=\frac{g}{\gamma}=\frac{16g \rho_{m} \rho_{e}}{B^2}=\frac{(16)(9.81)(2700)(2.8*10^{-8})}{(1^{2})}=.0118 ## m/s
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    Wire loop falling out of a magnetic field

    You are correct, they do cancel out.
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    Wire loop falling out of a magnetic field

    I calculated the current by ## I=\frac{emf}{R} ## and the resistance by ##R=\frac{\rho_{e} (4l)}{A}## I then calculated the emf by taking the negative time derivative of the flux. Using the emf and the resistance I got ##I##. My professor claims this problem will be independent of mass. This...
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    Wire loop falling out of a magnetic field

    Homework Statement Here is a link to the problem: https://imgur.com/a/0T9sF I am having trouble finding the time it takes the loop to leave the field in part a. Homework Equations ## emf=-\frac{d \Phi}{dt} ## ## \Sigma F=ma=mg-BIl ## ## \frac{dv}{dt}-\gamma v=g ## where ##...
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