Zanotti, Francesco Maria, Della forza de' corpi che chiamano viva libri tre, 1752

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            <s xml:id="echoid-s735" xml:space="preserve">
              <pb o="49" file="0073" n="73" rhead="LIBRO I."/>
            A
              <emph style="it">nm</emph>
            , ACB; </s>
            <s xml:id="echoid-s736" xml:space="preserve">e queſti appunto ſono proporziona-
              <lb/>
            li ai quadrati delle linee
              <emph style="it">mn</emph>
            , BC. </s>
            <s xml:id="echoid-s737" xml:space="preserve">Voi, diſſi io al-
              <lb/>
            lora, avete inteſo le due precipue leggi della gra-
              <lb/>
            vità, da cui ſi derivano tutte le altre. </s>
            <s xml:id="echoid-s738" xml:space="preserve">Or vi par’
              <lb/>
            egli, che v’ abbia alcuna parte la forza viva? </s>
            <s xml:id="echoid-s739" xml:space="preserve">A
              <lb/>
            me par, diſſe il Signor Marcheſe, che la potenza
              <lb/>
            producitrice del movimento, e l’ inerzia vi faccia-
              <lb/>
            no ogni coſa; </s>
            <s xml:id="echoid-s740" xml:space="preserve">poichè ſe la gravità nel principio d’
              <lb/>
            ogni tempetto produce un picciolo movimento, e
              <lb/>
            l’ inerzia poi lo conſerva, ſeguir ne dee tutto quel-
              <lb/>
            lo, che abbiamo detto; </s>
            <s xml:id="echoid-s741" xml:space="preserve">ne potrebbe introdurviſi
              <lb/>
            veruna altra forza ſe non per corteſia. </s>
            <s xml:id="echoid-s742" xml:space="preserve">Sebbene io
              <lb/>
            ho ſentito dire, che i Leibniziani, introduttori
              <lb/>
            della forza viva, non tanto ſi fermano a conſide-
              <lb/>
            rare il corpo, allorchè cade, ma molto più, quan-
              <lb/>
            do ſale, dicendo che ſe egli venga ſpinto all’ insù
              <lb/>
            con quella velocità, che avea, cadendo, acquiſ-
              <lb/>
            tata, riconduceſi alla ſteſſa altezza nello ſteſſo tem-
              <lb/>
            po. </s>
            <s xml:id="echoid-s743" xml:space="preserve">Ma prima che noi entriamo a dir di ciò, pia-
              <lb/>
            cemi intender da voi alcune coſe intorno la ca-
              <lb/>
            duta, non perchè io non ne abbia inteſo quanto
              <lb/>
            era d’ uopo al propoſito noſtro, ma perchè deſi-
              <lb/>
            dero intenderne anche più. </s>
            <s xml:id="echoid-s744" xml:space="preserve">E ſe noi ci allonta-
              <lb/>
            niamo alcun poco dalla quiſtione della forza vi-
              <lb/>
            va, ciò che è a noi? </s>
            <s xml:id="echoid-s745" xml:space="preserve">potremo ritornarvi, come
              <lb/>
            vorremo. </s>
            <s xml:id="echoid-s746" xml:space="preserve">Ne è neceſſario, riſpoſi io, che il vo
              <lb/>
            gliamo; </s>
            <s xml:id="echoid-s747" xml:space="preserve">perchè già ne abbiamo detto, quanto a
              <lb/>
            voi può baſtare, e dee. </s>
            <s xml:id="echoid-s748" xml:space="preserve">Di queſto anche, riſpo.
              <lb/>
            </s>
            <s xml:id="echoid-s749" xml:space="preserve">ſe il Signor Marcheſe, diremo poi. </s>
            <s xml:id="echoid-s750" xml:space="preserve">Intanto io vi
              <lb/>
            prego levarmi un dubio. </s>
            <s xml:id="echoid-s751" xml:space="preserve">Voi avete detto, </s>
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