Having a hard time writing equations of motion....

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Homework Statement


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Homework Equations


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The Attempt at a Solution


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I changed my FBD, to make the units correct. But I still don't know if this is correct.
upload_2016-11-13_18-32-1.png


My new EOM and reaction forces come out to:

upload_2016-11-13_18-32-49.png


Is this correct? Or did I mess something up?

Thanks!
 
Thread 'Help with Time-Independent Perturbation Theory "Good" States Proof'

Thread 'Help with Time-Independent Perturbation Theory "Good" States Proof'

(Disclaimer: this is not a HW question. I am self-studying, and this felt like the type of question I've seen in this forum. If there is somewhere better for me to share this doubt, please let me know and I'll transfer it right away.) I am currently reviewing Chapter 7 of Introduction to QM by Griffiths. I have been stuck for an hour or so trying to understand the last paragraph of this proof (pls check the attached file). It claims that we can express Ψ_{γ}(0) as a linear combination of...
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