134 BUOYANCY. 



destroy the equilibrium, but water will overflow through the spout 

 until the equilibrium is restored. This shows that the floating 

 body has displaced its own weight of water. 



EXERCISES. 



1. How much weight will a cu. dm. of iron lose when placed in 

 water ? 



2. How much weight would it lose in a liquid 13.6 times as heavy 

 as water ? 



3. If the cu. dm. of iron weighs only 7780 g., what does your 

 answer to the 3d problem signify ? 



4. How much weight would a cubic foot of stone lose in water ? 



5. If 100 cu. cm. of lead weigh 1135 g. t what will it weigh in 

 water ? 



6. If a brass ball weigh 83.8 g. in air and 73.8 g. in water, what is 

 its volume ? 



7. If a brass ball weigh 83.8 oz. in air and 73.8 oz. in water, what 

 is its volume ? 



Recapitulation. In this section we have considered 

 the Conditions of Liquids at Rest ; the Equi- 

 librium of liquids in Single and Communica- 

 ting Vessels ; the Water Supply of cities ; the 

 Equilibrium of Different Liquids in commu- 

 nicating vessels ; Capillary Attraction and some 

 of its Phenomena ; Capillary Tubes ; the 

 quantity of a Fluid Displaced by an immersed 

 solid; the Buoyancy of Fluids ; Archimedes' 

 Principle ; several Explanations of Archimedes' 

 Principle and its Experimental Verification ; 

 Floating Bodies. 



