( and ( ( ( centrifugal and ) centripetal ) ( force . ) ) )
(ROOT (S (CC and) (NP (JJ centrifugal) (CC and) (NN centripetal)) (VP (VBP force)) (. .)))
and centrifugal and centripetal force.
(ROOT (S (NP (JJ Centripetal) (NN force)) (VP (VBZ is) (NP (NP (DT the) (NN force)) (SBAR (WHNP (WDT that)) (S (VP (VBZ causes) (NP (JJ centripetal) (NN acceleration))))))) (. .)))