Calculate energy for cylindrical and spherical cases with special factors
E = 2πρHc² ∫₀ᴿ [1/(1 - V²r²/(R²c²)) - 1/√(1 - V²r²/(R²c²))] r dr
E = 2πρHc² ∫₀ᴿ [1/(1 - (V²/c²)(1 - r/R)²) - 1/√(1 - (V²/c²)(1 - r/R)²)] r dr
E = 4πρc² ∫₀ᴿ [1/(1 - V²r²/(c²R²)) - 1/√(1 - V²r²/(c²R²))] r² dr
E = 4πρc² ∫₀ᴿ [1/(1 - (V²/c²)(1 - r/R)²) - 1/√(1 - (V²/c²)(1 - r/R)²)] r² dr