Aristotle, Problemata Mechanika, 1831

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            <p n="47">
              <s id="g0132802">
                <pb xlink:href="080/01/022.jpg" ed="Bekker" n="857b"/>
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              δίως, αἴρειν δὲ πλήρη χαλεπῶς; </s>
              <s id="g0132803">λυσιτελεῖ οὖν μικρῷ βραδύτερον
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              εἶναι τὸ καταγαγεῖν πρὸς τὸ πολὺ κουφίσαι τὸ
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              βάρος ἀνάγοντι. τοῦτο οὖν ποιεῖ ἐπ' ἄκρῳ τῷ κηλωνείῳ ὁ
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              μόλιβδος προσκείμενος ἢ ὁ λίθος.</s>
              <s id="g0132804">καθιμῶντι μὲν γὰρ γίνεται
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              βάρος μεῖζον ἢ εἰ μόνον κενὸν δεῖ κατάγειν τὸν κάδον·
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              ὅταν δὲ πλήρης ᾖ, ἀνάγει ὁ μόλιβδος, ἢ ὅ τι ἂν ᾖ
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              τὸ προσκείμενον βάρος.</s>
              <s id="g0132805">ὥστ' ἐστὶ ῥᾷον αὐτῷ τὰ ἄμφω
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              ἢ ἐκείνῳ.</s>
            </p>
            <p n="48">
              <figure id="id.080.01.022.1.jpg" xlink:href="080/01/022/1.jpg" number="27"/>
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              Διὰ τί, ὅταν φέρωσιν ἐπὶ ξύλου ἤ τινος τοιούτου δύο
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              ἄνθρωποι ἴσον βάρος, οὐχ ὁμοίως θλίβονται, ἐὰν μὴ ἐπὶ
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              τῷ μέσῳ ᾖ τὸ βάρος, ἀλλὰ μᾶλλον ὅσῳ ἂν ἐγγύτερον ᾖ
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              τῶν φερόντων; </s>
              <s id="g0132902">ἢ διότι μοχλὸς μὲν γίνεται οὕτως ἐχόντων
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              τὸ ξύλον, τὸ δὲ βάρος ὑπομόχλιον, </s>
              <s id="g0132903">ὁ δὲ ἐγγύτερος τοῦ
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              βάρους τῶν φερόντων τὸ βάρος τὸ κινούμενον, ἅτερος δὲ
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              τῶν φερόντων τὸ βάρος ὁ κινῶν.</s>
              <s id="g0132904">ὅσῳ γὰρ πλέον ἀπέχει τοῦ
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              βάρους, τοσούτῳ ῥᾷον κινεῖ, καὶ θλίβει μᾶλλον τὸν ἕτερον
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              εἰς τὸ κάτω, ὥσπερ ἀντερείδοντος τοῦ βάρους τοῦ ἐπικειμένου
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              καὶ γινομένου ὑπομοχλίου.</s>
              <s id="g0132905">ἐν μέσῳ δὲ ὑποκειμένου τοῦ
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              βάρους, οὐδὲν μᾶλλον ἅτερος θατέρῳ γίνεται βάρος, οὐδὲ
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              κινεῖ, ἀλλ' ὁμοίως ἑκάτερος ἑκατέρῳ γίνεται βάρος.</s>
            </p>
            <p n="49">
              <s id="g0133001prop30">
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              Διὰ τί οἱ ἀνιστάμενοι πάντες πρὸς ὀξεῖαν γωνίαν τῷ
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              μηρῷ ποιήσαντες τὴν κνήμην ἀνίστανται, καὶ τῷ θώρακι
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              πρὸς τὸν μηρόν; εἰ δὲ μή, οὐκ ἂν δύναιντο ἀναστῆναι.</s>
              <s id="g0133002">πότερον
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              ὅτι τὸ ἴσον ἠρεμίας πανταχοῦ αἴτιον, ἡ δὲ ὀρθὴ γωνία
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              τοῦ ἴσου, καὶ ποιεῖ στάσιν· διὸ καὶ φέρεται πρὸς ὁμοίας
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              γωνίας τῇ περιφερείᾳ τῆς γῆς. οὐ γὰρ ὅτι καὶ πρὸς ὀρθὴν
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              ἔσται τῷ ἐπιπέδῳ.</s>
              <s id="g0133003">ἢ ὅτι ἀνιστάμενος γίνεται ὀρθός, ἀνάγκη
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              δὲ τὸν ἑστῶτα κάθετον εἶναι πρὸς τὴν γῆν.</s>
              <s id="g0133004">εἰ οὖν μέλλει
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              ἔσεσθαι πρὸς ὀρθήν, τοῦτο δέ ἐστι τὸ τὴν κεφαλὴν ἔχειν
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              κατὰ τοὺς πόδας, καὶ γίνεσθαι δὴ ὅτε ἀνίσταται.</s>
              <s id="g0133005">ὅταν μὲν
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              οὖν καθήμενος ᾖ, παράλληλον ἔχει τὴν κεφαλὴν καὶ τοὺς
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              πόδας, καὶ οὐκ ἐπὶ μιᾶς εὐθείας.</s>
              <figure id="id.080.01.022.2.jpg" xlink:href="080/01/022/2.jpg" number="28"/>
              <s id="g0133006">ἡ κεφαλὴ Α ἔστω, θώραξ
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              ΑΒ, μηρὸς ΒΓ, κνήμη ΓΔ.</s>
              <s id="g0133007">πρὸς ὀρθὴν δὲ γίνεται
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              ὅ τε θώραξ [ἐφ' ὧν ΑΒ] τῷ μηρῷ καὶ ὁ μηρὸς τῇ κνήμῃ
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              οὕτως καθημένῳ. ὥστε οὕτως ἔχοντα ἀδύνατον ἀναστῆναι.</s>
              <s id="g0133008">
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              ἀνάγκη δὲ ἐγκλῖναι τὴν κνήμην καὶ ποιεῖν τοὺς πόδας ὑπὸ
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              τὴν κεφαλήν.</s>
              <s id="g0133009">τοῦτο δὲ ἔσται, ἐὰν ἡ ΓΔ ἐφ' ἧς τὰ ΓΖ
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              γένηται, καὶ ἅμα ἀναστῆναι συμβήσεται, καὶ ἔχειν ἐπὶ</s>
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