The first flexible element produces a force moment about the axis in a first direction biasing the force modifying {HEAD ~ member} into {TAIL ~ rotation} in the first direction 
into
The first flexible element produces a force moment about the axis in a first direction biasing the force modifying { HEAD ~ member } into { TAIL ~ rotation } in the first direction
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH