Centripetal force (Fr) = MV2r
i.e. Fr = Mv2r
= 9.1×10−31×2.0×106×2.0×1066.1×10−11 N
= (36.4×10−196.1×10−11) N
= 5.967 x 10−8 N
~ 6.0 x 10−8 N
