They will determine the amount of force needed to produce this amount of stretch and thus determine the centripetal force F c .
(They; will determine; the amount of force) (force; needed; to produce this amount of stretch and thus determine the centripetal force) (the centripetal force; c; F)
They force the centripetal force
will determine needed c
the amount of force
to produce this amount of stretch and thus determine the centripetal force
F