People of good social position to force admittance (6)
I believe the answer is:
gentry
'people of good social position' is the definition.
(I've seen this before)
'force admittance' is the wordplay.
'force' becomes 'G' (short for gravity).
'admittance' becomes 'entry' (I've seen this in another clue).
'g'+'entry'='GENTRY'
'to' is the link.
(Other definitions for gentry that I've seen before include "aristocrats" , "who are noble" , "Top drawer" , "Upper-crust people, just below nobility" , "Class of society" .)