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