Vibration of the Gravest Mode of a Thin Rod. 265 

 Fiar. 3. 



<?39 o & 



©38 o-5 



•37 0.4 



• ■36 °-3 



• •35 °-Z - 



*-34 o-r 



13clc 2 lc^ 

 8 + 77 + 2l a + 5/ 3 



Curve marked o is graph of / 52 292 1 





Curve marked • is graph of 



f ]22_ 082 1 

 45 '315 1 c 



J 52 202 I 



45 315 



1 + 



1 



-2. ^ 

 I 



