Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Daidaitawa tsakanin taro da makamashi, kamar yadda aka bayyana ta hanyar dabara E = mc2, shine mafi shahararren sakamakon ka'idar dangi ta musamman. A cikin ka'idar dangi, taro da makamashi hanyoyi ne daban-daban na bayyana adadi daya na zahiri. Idan tsarin jiki yana da makamashi, shi ma yana da nauyin da ya dace, kuma akasin haka. Musamman, duk kaddarorin jiki waɗanda ke da alaƙa da makamashi, kamar zafin jiki ko makamashi mai ɗaurewa na tsarin kamar tsakiya ko kwayoyin, suna ba da gudummawa ga wannan jikin, sabili da haka suna aiki a matsayin tushen nauyi. A cikin dangi na musamman, makamashi yana da alaƙa da ƙarfi. Kamar dai yadda sarari da lokaci suke, a wannan ka'idar, bangarori daban-daban na wani abu mai zurfi da ake kira sarari-lokaci, makamashi da kuma motsi sune kawai bangarori daban-daban na hadadden, nau'i hudu wanda masana kimiyyar lissafi suke kira hudu-momentum. Sakamakon haka, idan makamashi shine tushen nauyi, dole ne motsawa ya zama tushen ma. Haka kuma gaskiya ne ga masu yawa waɗanda ke da alaƙa kai tsaye da makamashi da ƙarfin motsawa, wato matsin lamba na ciki da tashin hankali. Idan aka haɗa su, a cikin ka'idar dangi gabaɗaya, taro ne, makamashi, ƙarfin motsawa, matsin lamba da tashin hankali waɗanda ke aiki a matsayin tushen nauyi: sune yadda kwayoyin halitta ke gaya wa sararin samaniya yadda za su lanƙwasa. A cikin tsarin lissafi na ka'idar, duk waɗannan adadi sune kawai fannoni na mafi girman girman jiki wanda ake kira makamashi <unk> lokacin tensor.  Tambaya: Menene tushen nauyi guda biyar?
taro, makamashi, lokacin motsawa, matsin lamba da tashin hankali