>> No, obviously the frame is a strong magnetic effect, but the question is=20 phrased that the oil load made a difference so theoretically all we have to=20 consider is the delta effect, as the question was, =E2=80=9C=E2=80=A6can you= calculate the=20 capacity of the oil truck?=E2=80=9D Doug and I are just speculating about o= ther=20 possible effects than just the weight of the oil on the bedrock. I was=20 speculating primarily tongue-in-cheek, as probably for any possibility of th= e=20 effect to be significant, the Lehman would have to be constructed with the=20 magnet on the arm, and we weren't given that information. My point is that there is such a huge ratio between the diamagnetic=20 susceptability of oil and the ferromagnetic susceptability of iron that the=20 oil could not have any effect. I don't discount the gravitational attraction. G=3D 6.67x10^ -11 m^3 / K= g=20 s^-2 according to my quick calculations. Force F newtons =3D GxM1xM2/ d^2 wh= ere=20 M's are in Kg and d is in m. =20 Regards, Chris Chapman _____________________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>