A.L=R+ω B.L=R-ω C.L=Rω D.L=R/ω
A.0.1~0.2% B.0.3~0.5% C.0.03~0.05% D.0.01~0.02%
A.y=L2/2R B.y=L2/8R C.y=2L2/R D.y=8L2/R