šœƒ

x

Ė™x + LĖ™šœƒ

xšœƒĖ™

(m, L)

M

Let mass of bob be M.

The speed of the bob is     āˆ˜ -----------------
      (     Ė™)2  (  Ė™)2
v =    Ė™x+ L šœƒ  +  xšœƒ

The total angular momentum of the system is m L2Ė™šœƒ+ M v (āˆšL2-+-x2)
   3