ON I51FI,KD GUNS. 



Multiply the first by A, second by /.', and addiug to the equation above, 



i.- F+ /N. / .. ? i, 1 o-;.,j.;f f 



+ / l . 8 p \ 



whence, 



.2 



" /" 



1=0. 



P - M.-^| -/ N. cos - 1. ^-j P . sin (4^- f)=0; (9) 



/'. = 0; (II') 



;.>=o (io)' 



I. ( ^+f.'K.p.smO-Lp.==0-, 



From Eqs. (9) and (10) we have 



P - M. -^ -/ N. cos 

 A = __ ^ ; 



t- t P . sin (i ,. f ) 



I.^+/N.^. 8 m0 



/> 



Equating these values, we get, 



P-M.^-N.[/eo S H/,, 5 in^,i U (i,^)]-I.g^.-(l^)-0. (11) 

 Make 



W i+ ^- shi2 (H) (12) 



then will 



d? W 



L T^ 2 " +/ N ' ''■ 8iD ° 



N=ifl= ■ a 



I' 



T ,7 2 '/'• 

 I. -^^-. « 



N= ^ 



/i (l-«./smC) 

 Substituting this in Eq. (11,) we find 





Make 



A 1 ^ 



and the above becomes 



y #vf£ ( cos + r- 8in °- £? sin * ?)) t_ , , lY|=o 



<^ 2 L /> tl-a./.Bin0) w.J V" '/J 



/> (1-a./ sin tf) ».< \ '/ 



(317) 



