62 
on two points of support, and it is therefore necessary first to find 
the quantities in question for this beam. 
14a. With a view to this let us consider the freely supported 
beam AB charged at its right end by a force of one ton (fig. 3a). 
The descent B Bt) =y, as well as the angle of inclination g, is 
Fig. 3a. 
Fig. 35. 
') In order to distinguish it from a moment of transition, a unit charge acting 
in a point of support B,C... is indicated by indices 17 or 1M placed under the 
letters B,C... according as it represents a force or a couple. 
