$ Look Pivot, NO string (Bob ticked).!!
General Relativity has a stress-energy tensor, which includes
not only mass but also energy and -=-
PROFOUNDLY, there is NO "mass" ..in General Relativity (gtr).
PROFOUNDLY, iRONiCALLY, there's NO GR "space-time-curvature".
(The GR, G_uv = T_uv CANNOT be DEFiNED, in TERMs of "mass".!!)
possibly other factors relating to density and momentum, -=-
There is NO "mass -=- density and momentum", in GEOMETRY, duh.

This is NOT fluffy-level math ..it's whole-wheat arithmetic.!!

G*Mp*{mph} C1*(C2a*C2b) C1
-- --- -- = -- -- -- -- = -- = 4*pi*Vu*{e}*lo = 4*pi*#*{e}*c ;
(n - 1) C2^2*c c

C1*(p1*p2)*c C1*({e}^2*c^2)*c C1(q1*q2)*c^3 C1*{e}*c
= -- --- -- -- = -- -- ---- -- -- = -- - --- - -- = -- -- --
C2^2 C2^2 C2^2 C2 .

GENERAL GUESS photon mass [mph] = nA*{mph}*ls / rA = m1 = mD / n.
PARTiCULAR iSS photon mass {mph} = 2*pi*h / tp*c^2 = hbar / ls*c
= hbar / ts*c^2 = h / 2*pi*ls*c.

$ PiVOTED common-centre-of-mass (c.c.m.) PENDULAE
GRAViTY acceleration g = (g1 + g2) = G*(M1 + m2) / (n - 1)*d^2:

|G*(M1 + m2)| |4*(pi)^2*d| | 4*(pi)^2*r1 4*(pi)^2*r2 |
|-- -- -- --| = |-- -- - --| = |(-- -- -- --) + (-- -- -- --)|
|(n - 1)*d^2| | T^2 | | T^2 T^2 |

|4*(pi)^2*lbob| |4*(pi)^2*(r1 + r2)|
= |-- -- - -- --| = |-- -- --- -- -- --| = g1 + g2 = gravity g.
| (tbob)^2 | | T^2 |

Note therefore, as radii r1 & r2 vary and/or M1 & m2 vary, etc,
then, BOTH, M1 & m2 can *TOUCH down* ON each other's SURFACE.!!
Depending, of course, on M1's & m2's SiZE, SHAPE, DENSiTY, etc.
Dimension, d = r1 + r2 = centre-to-centre distance, of M1 & m2.

$ M1*v1^2 m2*v2^2
NOTE: -- - -- = -- - -- = M1*r1 = m2*r2. And, ALSO, FiNALLY..
$ g1 g2

.. Mp*lp = {mph)*ls = me*wls = Moo*loo / 4*pi = hbar / c.

Brian A M Stuckless
^