( Weight ( ( ( is actually ) ( ( a measure ) ( of ( ( ( the ( gravitational force ) ) ( -LRB- ( pull -RRB- ) ) ) ( ( ( felt ( by ( a body ) ) ) and ) ( is ( measured ( in ( ( ( ( ( newtons ( -LRB- ( N -RRB- ) ) ) ( note ( that ( ( scientific units ) ( ( ( are ( almost always ) ) ( in ( lower case ) ) ) ( when ( ( spelled out ) fully ) ) ) ) ) ) ) , ) hence ) ( ( newtons and ) ( not Newtons ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Weight)) (VP (VBZ is) (ADVP (RB actually)) (NP (NP (DT a) (NN measure)) (PP (IN of) (NP (NP (DT the) (JJ gravitational) (NN force)) (PRN (-LRB- -LRB-) (NP (NN pull)) (-RRB- -RRB-)) (VP (VP (VBN felt) (PP (IN by) (NP (DT a) (NN body)))) (CC and) (VP (VBZ is) (VP (VBN measured) (PP (IN in) (NP (NP (NP (NNS newtons)) (PRN (-LRB- -LRB-) (NP (NNP N)) (-RRB- -RRB-)) (SBAR (S (VP (VBP note) (SBAR (IN that) (S (NP (JJ scientific) (NNS units)) (VP (VBP are) (ADVP (RB almost) (RB always)) (PP (IN in) (NP (JJR lower) (NN case))) (SBAR (WHADVP (WRB when)) (S (VP (VBN spelled) (PRT (RP out)) (ADVP (RB fully)))))))))))) (, ,) (RB hence) (NP (NP (NNS newtons)) (CC and) (NP (RB not) (NNPS Newtons)))))))))))) (. .)))
Weight is actually a measure of the gravitational force (pull) felt by a body and is measured in newtons (N) note that scientific units are almost always in lower case when spelled out fully, hence newtons and not Newtons.
(ROOT (S (NP (NP (NNP Newton)) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-))) (VP (VBZ is) (NP (NP (DT the) (NN si) (NN unit)) (PP (IN for) (NP (NN weight))))) (. .)))
Newton (n) is the si unit for weight.