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22
2
12
ab
Tr
r
g
π
+
=+
In the figure below, we plot
T
as a function of
r
, for
a
= 0.35 m and
b
= 0.45 m.
(b) The minimum of T can be located by setting its derivative to zero,
/0
dT dr
=
. This
yields
2
2
(0.35 m)
(0.45 m)
0.16 m.
12
12
r
++
==
=
(c) The direction from the center does not matter, so the locus of points is a circle around
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.
 Spring '08
 Any
 Physics

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