Both the field \(g_B\), and the force \(F_{gB}\), are due to the macroscopic/aggregated motion of the protons in the body not mass per se.
We may deduce that a spinning disc produces a weak \(E_T\) field because of its \(T^{+}\) particles. This field interacts with the \(T^{+}\) particles again to produce a force \(F_{E_T}\). This is especially so when the outer \(T^{-}\) clouds are removed under high heat.
Similarly, a spinning disc produces a weak \(B_g\) field due to \(g^{+}\) particles and subsequently produces a force \(F_{B_g}\) when the \(g^{-}\) cloud are removed or reduced.
That aside, we have
the Robinsons. Positive charges on the hull of the flying saucer spin anti-clockwise to generate a \(g\) field upwards, as the whole saucer is spinning.
Fly!
