Last update: 10 January 2003:	FIO	Errata for P.343, Problem 6.2.6
Original:    27 August  2002:	FIO	Eratta for P.174, Problem 6.3.3
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Mathematica For Physics: 2nd Edition

Robert L. Zimmerman and Fredrick I. Olness

WebSite:  
  www.physics.smu.edu/~olness
  darkwing.uoregon.edu/~phys600/

MathSource Number: 0206-862

ISBN 0-201-53796-6

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NOTES AND ERRATA: 

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2nd Edition: Chpt.6, Problem 6.3.3 p.174: Sphere Rolling on a Fixed Sphere.
1st Edition: Chpt.4, Problem 4.2.5 p.343: Sphere Rolling on a Fixed Sphere.

The figure in the first edition was incorrect. This is fixed in the
2nd edition. The second angle (theta-2) is measured from the contact
point of the two spheres. Although this definition may be less
conventional, it simplifies our particular problem.

We thank Kevin J. McCann for finding this error. 



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2nd Edition: Chpt.6, Problem 6.2.6 p.334: Spring Pendulm

In the solution shown on p.334, there is a typo in In[142]. 
All the expressions should consistenly be {rc[t],\[Theta]c[t]}.

Inside the definition of Point, the incorrect radius rd[t] was used
instead of the correct value rc[t]. In the animation, this error will
generate a mismatch between the line and the point shown.

The correct input should read: 


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In[142]:=

line[t_] :=
  Show[ 
    Graphics[
      {{Line[{{0, 0}, rc[t]{Sin[\[Theta]c[t]], -Cos[\[Theta]c[t]]}}],
          {PointSize[0.1], 
            Point[ rc[t]{Sin[\[Theta]c[t]], -Cos[\[Theta]c[t]]}]}}},
      PlotRange -> {{-10, 10}, {-13, 13}}
      ]
    ]
 ]
      
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We thank Jerry Blimbaum for finding this error. 

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We will post other notes and errata here as issues arise. 
 
							FIO  27 Aug 2002

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