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PHL 606 Lecture 4: Lecture 4.docx

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School
Ryerson University
Department
Philosophy
Course
PHL 606
Professor
Kym Mac Laren

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Document Summary

Basic point of daethema is that love is learning to seek what we really desire (coming to self-king) Like the cave, has some truth to it, but has a lot of falsity and misunderstanding built in it. Daethema says we speak of a love of some other thing, but we always want to have desire because you yourself don"t have it. Love is a lack, because it is a desire for something. And it is a seeking of what it lacks. Love is a messenger, like a god/perfection/ultimate reality divine perfection that bestows gifts on humans. Love is something that brings us a sense of something else beyond this, helps inspire us to attain to that. It helps humans make a connection between us and love. Love is leading us through learning about what is true. Love is in between wisdom and ignorance.

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Related Questions

A mass m rests on a frictionless horizontal table and isconnected to rigid supports via 2 identical springs each of relaxedlength L0 and spring constantk. Each spring is stretched to a length L considerable greater thanL0. Horizontal displacementsof m from its equilibrium position are labeled x and y.
(Diagram insert didn't work, all it really tells you is that xis on the axis of the springs and y is perpendicular to thesprings)
a) Write down the differential equation of motion (i.e.,Newton's Law) governing small oscillations in the xdirection.
b) Same as a but in the y direction (assume that y <<L).
c) In terms of L and L0, calculate the ratio of the periods ofthe oscillations along x and y.
d) If at t=0 the mass m is released from the point x = y = A0with zero velocity, what are its x and y coordinates at any latertime t?
---------------------------
So, I started with just ma = -2kx for a, leading me to thedifferential equation x''(t) + (2k/m) x = 0.
Then I did basically the same thing with y.
However, when I get to c, there's my problem - I don't knowhow I could write any of this in L and L0.
Also, b doesn't really make sense to me because if y is smallwhen compared to L, it seems like there shouldn't be anyoscillation in the y direction.
The answer the back of the book shows for c and d are:
c) Tx/Ty = (1 - L0 / L)1/2
d) x(t) = A0cos( (2k/m)1/2 t)
y(t) = A0cos( (2k(L-L0)/mL)1/2 t)
I have no idea how they got to these answers. Can somebodyhelp me? It has something to do with springs already beingstretched, but it seems they are making an assumption somewherethat I don't understand.