Firstly let me waste a bit of your time by explaining I have not done much with maths or physics for ages! So please forgive my stupidity. My question: What kind of physical force does the earth's magnetic field exert on any object on earth? My calculations (very probably deeply flawed): Google says the earth's magnetic field is 0.3 - 0.7 Gauss in strength. This is equal to 0.00003 - 0.00007 Tesla T= 1(N/A*m) I assumed: N = newton A = Area / surface in m2 m = mass of the (magnetic?) body(?) in kg So the force on an object (weight: 1kg / contact area with ground: 1m2) would be: T = N = 0.00003 - 0.00007 Newton Now after someone has pounded my math into dust I still wonder if this only applies to a place on earth where the magnetic field lines are at a 90 degree angle with the earth's surface? And what would apply for a place around the equator for example? Any comments are welcome.