Umthetho kaNewton Wezinto Ezidonsela Phansi
Kungani izithelo ziwela noma ziqhubekela ebusweni bomhlaba ngemva kokukhululwa esiqwini sazo? Imithetho kaNewton ithi uma isithelo sinyakaza, kumele kube namandla asebenzayo kuso. Amandla abangela ukuba into iwele ngokukhululeka ebusweni boMhlaba abizwa ngokuthi amandla adonsela phansi oMhlaba.
Inkinga yezinto eziwayo ezihilela amandla adonsela phansi, oyifundayo manje, yaqala ukucatshangelwa futhi yafundwa ngusosayensi waseBrithani ongasekho u-Isaac Newton. Ukukhathazeka kukaNewton kuvela eGrisi lasendulo. Kunezinkinga ezimbili eziyisisekelo amaGreki ayezihlola kudala ngaphambi kokuba uNewton azalwe.
Umbuzo ohlala njalo uthi kungani izinto ziwela eMhlabeni nokuthi amaplanethi, okuhlanganisa neLanga neNyanga, ahamba kanjani. AmaGreki angaleso sikhathi ayebheka inkinga yezinto eziwayo kanye nokunyakaza kwamaplanethi njengezinto ezimbili ezihlukene. Lokhu kwaqhubeka kwaze kwaba yisikhathi sikaNewton. Umsebenzi kaNewton wakhelwe emsebenzini walabo ababengaphambi kwakhe. Okwahlukanisa uNewton kulabo ababengaphambi kwakhe ukuthi uNewton wayebheka inkinga yezinto eziwayo kanye nokunyakaza kwamaplanethi njengokubangelwa yimbangela eyodwa futhi elalela imithetho efanayo. Ngamanye amazwi, uNewton waphikisana ngokuthi amandla abangela izinto ukuba ziwele eMhlabeni angamandla afanayo abangela ukuba iNyanga ijikeleze uMhlaba.
