Integrating equation (4) and substituting at time t = t1, with ,
(5)
Thus, accelerating area A1 is given by,
(6)
Substituting equation (5) in equation (6),
(7)
Similarly, decelerating area, A2, can be calculated as follows.
(8)
Since for a stable swing,
(9)
i.e.
(10)
Since, is a function of Pmo from equation (1) and is function of Pmo as well as from equation (5), it follows from equation (10) that depends on Pmo and .
at time t = t1, with 
, 
is a function of Pmo from equation (1) and 
is function of Pmo as well as 
from equation (5), it follows from equation (10) that 
depends on Pmo and 
