( ( At ( the ( micro level ) ) ) ( , ( however ( , ( inertia ( ( is ( ( much ( more ( feeble ( at ( performing ( these tasks ) ) ) ) ) ) ( because ( ( ( the mass ) ( of ( ( micromachines and ) microcomponents ) ) ) ( ( is ( very small ) ) ( relative ( to ( ( the forces ) ( acting ( on it ) ) ) ) ) ) ) ) ) ) ; ) ) ) ) ) )
(ROOT (S (PP (IN At) (NP (DT the) (JJ micro) (NN level))) (, ,) (ADVP (RB however)) (, ,) (NP (NN inertia)) (VP (VBZ is) (ADJP (ADJP (RB much) (RBR more) (JJ feeble) (PP (IN at) (S (VP (VBG performing) (NP (DT these) (NNS tasks)))))) (SBAR (IN because) (S (NP (NP (DT the) (NN mass)) (PP (IN of) (NP (NNS micromachines) (CC and) (NNS microcomponents)))) (VP (VBZ is) (ADJP (RB very) (JJ small)) (ADVP (JJ relative) (PP (TO to) (NP (NP (DT the) (NNS forces)) (VP (VBG acting) (PP (IN on) (NP (PRP it)))))))))))) (: ;)))
At the micro level, however, inertia is much more feeble at performing these tasks because the mass of micromachines and microcomponents is very small relative to the forces acting on it;
(ROOT (S (NP (NNS Centrifuges)) (VP (VBP use) (NP (NN inertia)) (S (VP (TO to) (VP (VB perform) (NP (PRP$ their) (NN task)))))) (. .)))