180 
MR. L. N. a. FILON OX THE ELASTIC EQUILIBRIUM OF 
measured by the exteiisometer, as comjmred Avitli tlie disjdaceineiits calculated liom 
tlie oi diiiary theory, over the free length of the Imr : — 
l)i.splacements. 
. = (-1)0 
z={-2)c. 
,s - (-3)0 
. = (-4)0 
- = (•5)c. 
Actual. 
•10972 
•22900 
•382.53 
•59238 
•67152 
Calculated. 
•10000 
•20000 
• 30000 
• 40000 
• 50000 
Difference . 
•00972 
•02900 
•082.53 
•192.38 
•17152 
Percentage correction . 
— 8 • 86 
-12-66 
-21-57 
- 32-48 
-25-54 
We see, therefore, that in such a case very large corrections have to be applied to 
exteiisometer readings. 
Diagram 5.—Showing Stre!5s zz for the Cylinder under Shearing Pull. 
