( ( On ( ( the ( other hand ) ) ( if ( ( two ( opposing charges ) ) ( ( come ( into contact ) ) ( with ( one another ) ) ) ) ) ) ) ( they ( ( will ( be ( attracted ( to ( one another ) ) ) ) ) . ) ) )
(ROOT (S (PP (IN On) (NP (NP (DT the) (JJ other) (NN hand)) (SBAR (IN if) (S (NP (CD two) (JJ opposing) (NNS charges)) (VP (VBP come) (PP (IN into) (NP (NN contact))) (PP (IN with) (NP (CD one) (DT another)))))))) (NP (PRP they)) (VP (MD will) (VP (VB be) (VP (VBN attracted) (PP (TO to) (NP (CD one) (DT another)))))) (. .)))
On the other hand if two opposing charges come into contact with one another they will be attracted to one another.
(ROOT (S (NP (JJ Opposite) (NNS charges)) (VP (VBP attract) (NP (CD one) (DT another))) (. .)))