THE PRINCIPLES OF MYODYNAMICS. 



13 



of the lever is represented by the lever's hori- 

 zontal position. 



6. There are two principles in the parallelo- 

 gram of forces : — 



I. In myostatics two adjacent sides of a paral- 

 lelogram may represent two components, and 

 the inclosed diagonal of the parallelogram may 

 represent the resultant of these two components. 

 A force may be resolved into two components 

 — as m into a and b : See Fig. 2. 



II. In myokinetics. — The forces are propor- 

 tional to the squares of the respective velocities 

 with which they move, because — 



F 



Kinetic energy = xV^ . . (i.) 



2 g 

 W 



Kinetic energy=:: xV^ . . (2.) 



2 g 

 P 



Kinetic energy= xV^ . . (3.) 



2 g 



Now g represents the increment of velocity 

 of a falling body due to gravity, and is 32. 16 ft, 

 or 9. 8 m. 



