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56. (a) Eq. 128 leads to
T
1
sin40º
+
T
2
sin
θ
=
mg
. Also, Eq. 127 leads to
T
1
cos40º
−
T
2
cos
= 0.
Combining these gives the expression
2
cos tan 40
sin
mg
T
θθ
=
°+
.
To minimize this, we can plot it or set its derivative equal to zero.
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This note was uploaded on 05/17/2011 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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