H YDROST ATTCS. 



When the line of support is on the same side of the 

 line of pressure with the elevated part, the force 

 is accounted negative, and tends to overset the 

 body. 



267. If in ^, floating body, of which the trans- 

 verse section is the same from one end to the other, 

 W be the weight, a the length of the water line, 

 6 >2 the area of the section of the immersed part, d 

 the distance between the centre of gravity of the 

 whole and the centre of gravity of the immersed 

 part, and i an indefinitely small inclination from 

 the position of equilibrium ; the momentum of 

 the force tending to restore the equilibrium is 



_ _ d) W sin I 



If TTT-^ > ^ tne f rce ten( ls to restore the body to 



1 ^ f* 



its state of equilibrium, 



If jg j = d, there is no force tending either to re- 

 store or destroy the equilibrium. 



a 3 

 l%c* < ^ ^ e ^ rce ^ ecomes ne gative, and tends 



to overset the body. 



When W remains the same, the stability is propor- 

 tional to (~-^ d ) sin i. 



When 



