438 



THE STRENGTH 



Expt. 3rd. — Length of arm 5 feet, weight 

 applied at 4 feet 6 inches from shoulder, 

 deflections taken at the end, section nearly same 

 as in the last experiment, it being cast from 

 the same model. Weight of casting at the end 

 with scale 9f + 4| = 14 lbs. 



Weight. 



30 

 40 

 50 

 60 

 70 



Deflection. 



lean 07 ^ i Unloaded, it had taken a sensible set, but 

 • *' 3 I retnrned in a minute or two lo its place. 



1.29 



1.67 Set .05 



1.94 



2.28 Set .14 



Expt. 4. — Length of arm 5 feet — deflections 

 taken at the end — weights hung at 4 feet 

 6 inches from shoulder — weight of casting at 

 the end with scale 10| + 4f = 15 lbs., AB 

 = 4.1 inches, BC = .25, DE = 1.1, EF .= .25. 



The experiment was commenced with the rib 

 upwards, thus j-, but the casting was turned 

 the other side up before the elasticity became 

 imperfect. 



