Sb

where

"IPo ir2a{a2+r7 + 2arsm9)

K and E are complete elliptic integrals of the first and second kinds with argument k =

Aar sin 9

a2 + r2+2arsin9

Figure 7-23 defines the.relevant geometry. For small k2, Eq. (7-99) becomes

¡itfnrsm9

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