Vibrations of Bifle Barrels, 



335 



Acceleration 





















1 





























































































— — 

























































































•01 



V 









•0( 





?! 









•OC 



3 St 



CO/7i 



is. 



































































































































0/<z ( 





773. 































































































































































































































•0( 



11 









'Ot 



)£ 









'Ot 



03 St 



COfl 



is. 





















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fro, 



mio 























































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■0 



V 









■0 



12 









■OC 



\3$t 



con 



vs. 



supposing that the harmonic couple it represents continued to act. If 

 Ti, T 2 . . . T m are the natural periods of the various modes in which 

 the rifle can vibrate, and d the distance of the centre of gravity from 



