What is the empirical relationship for the rate of neck growth when a sphere is in contact with a flat surface?

Rate of neck growth (t^{ frac{2}{7}} )

Rate of neck growth (t^{ frac{1}{6}} )

Rate of neck growth (t^{ frac{1}{7}} )

Rate of neck growth (t^{ frac{2}{7}} )

Rate of neck growth (t^{ frac{1}{8}} )

What is the empirical relationship for the rate of neck growth when a

1.	What is the empirical relationship for the rate of neck growth when a sphere is in contact with a flat surface?
A.	Rate of neck growth (t^{ frac{1}{6}} )
B.	Rate of neck growth (t^{ frac{1}{7}} )
C.	Rate of neck growth (t^{ frac{2}{7}} )
D.	Rate of neck growth (t^{ frac{1}{8}} )
Answer» C. Rate of neck growth (t^{ frac{2}{7}} )