( ( ( ( Take ( a ( loose magnet ) ) ) and ) ( ( ( place it ) ( on ( the Magnet-on-a-post ) ) ) ( so ( ( the ( two magnets ) ) attract ) ) ) ) . )
(ROOT (S (VP (VP (VB Take) (NP (DT a) (JJ loose) (NN magnet))) (CC and) (VP (VB place) (NP (PRP it)) (PP (IN on) (NP (DT the) (NN Magnet-on-a-post))) (SBAR (IN so) (S (NP (DT the) (CD two) (NNS magnets)) (VP (VBP attract)))))) (. .)))
Take a loose magnet and place it on the Magnet-on-a-post so the two magnets attract.
(ROOT (S (S (VP (VBG Increasing) (NP (NP (DT the) (NN distance)) (PP (IN between) (NP (DT the) (CD two) (NNS magnets)))))) (VP (MD will) (VP (VB cause) (NP (DT a) (NN decrease)) (PP (IN in) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN attraction)) (PP (IN between) (NP (CD two) (NNS magnets))))))))) (. .)))
Increasing the distance between the two magnets will cause a decrease in the force of attraction between two magnets.