Chaicho uremu

Zvichida kwete vadzidzi ndambonzwa inotevera dambudziko: "Ndezvipiko zvakareruka - a churu pamusoro Zvinhu Zvisina Basa kana kilogram zvidhina?". Chinonyanya kuziva ndechokuti, pasinei nemashoko maturo, vakawandisa vanoita maturo nharo. Kana paiva mugove mumagakava tsika - hazvizivikanwi, asi zvinogona vaifungidzira kuti tinyatsonzwisisa kurema Data vachigara zvinhu inobva tikaenzanisa yavo hombe zvatariswa rave richizivikanwa kubvira panguva Archimedes. Dzinenge unhu vakanzwisisa kuti mafungiro mamwe akayera tsika Somuenzaniso, uremu uye vhoriyamu. Ngaaverenge nhamba G nokuda reshiyo:

G = P / V, uye nokuyerwa unit iri SI - N / cubic mita.

Weight - chiyero regiravhiti kwePasi, uye wakananga negiravhiti nokuda kwechikonzero kwete hunhu zvinhu zvokunyama, sezvo kunoenderana nzvimbo kuyerwa. Chii kuti? Yeuka kuti kurema P - ndiro rinokweva maitiro munda, iyo chokuita inertial maitiro fuma vakawanda m, kubudikidza kumhanyisa rusununguko kuwa g. Ukuwo, g - vacillates uye kunobva, kusanganisira, uye kubva nenzvimbo Coordinates. Sezvo Newton wokutanga mutemo P = M *? G anogara kushanda, zvinokwanisika kuti titi variability kurema panguva imwe chete nokuchinja mune rinokweva kumhanyisa.

The klassiske tsananguro iri: "The mugove - ndiro reshiyo kurema muviri kuti inzwi rayo." Zvisinei, zviri nyore ichi riri zvikuru nouchapupu kunzwisisa - zvisiri kushanda dzakabatana kwakaita kuti kupesaniswa pfungwa chokuita kurema uye muviri uremu. Sezvo chikazozikamwa, maitiro vakawanda chikwata (SI) akaenzana 1 kg, uye simba munyika ino, maererano nomutemo Newton vake, zvinonzi akayera mu Newtons, uye 1h = 0,102 makirogiramu * 9.8 m / chik. ba.

Nokuti vazhinji hwokugadzira mafomu Newton simba chikwata chiri zvishoma zvakavaomera, saka kunyange akatanga kusika munhu mutsva chipimo gadziriro - rinokweva arşive hurongwa. Rakanga riine vakavhengana zviumbu yakayerwa: mita - kgf - wechipiri. Chii anopa? It nyore kushandisa vezvikwata simba muupenyu chaihwo nokuda chete kusanganiswa okuti maduramazwi uremu uye akananga giravhiti, kureva arambe achirema dzakasiyana hurongwa, akapa kuti kumhanyisa d ari kugara kana kunyora nezvavo.

Kudikanwa nyatsosarudza uremu aiti ari zvinhu kuzivikanwa michina, kutsunga nouipi mu mamiriro kwavo kana porosity.

Anozivikanwa nzira nokuda Pakusarudza mharidzo nendarama, arambe achirema anokosha zvivako, etc. Nzira inokosha kuyera chaiyo giravhiti kwakavakirwa misha yose embodiments siyana: muviri uremu kunoyerwa uye, nokunyudzwa mumvura, inzwi rayo, uye nengaidzo hunonzi - bhizimisi michina. Abudirire kushandisa mashoko vakawana saizvozvi, ari kudzidza nesimbi dzavo alloys. Kazhinji, priori anozivikanwa kuenderana zvakayerwa nesimbi chete zvakanaka-aidzidza ehupfumi. Kuzivikanwa kwavo itsva mienzaniso kuisa muzvinhu zvakawanda, asi vanotanga kudzidza kuyera zvariri regiravhiti.

The mvura inoshandiswa kazhinji mvura, asi nokuda kuyerwa yakakwirira zvakarurama zvinopa refu kutsiga chokunze parameters - tembiricha uye kumanikidzwa. Dzimwe nguva, somuenzaniso, ari kudzidza rinopenya kuti chitsotsi achishandisa rinokosha mvura ine yakananga kurema kupfuura 2 g / CC.

Dzakananga giravhiti akanga zvinhu rwokugadzira chinhu ari maindasitiri kushanda rinobva zvinwiwa. Fine-eparafini slurry pamwe ferroporoshkom kunoita remagineti kuumba munhu mvura ine shanduka dzinodzorwa kana preassigned dzakananga giravhiti nyore. Chakadaro kwacho pamafudzi vapfume pakati polymetallic ores uye nezvimwe zvakawanda chaizvo nouipi, izvo akaturikidzana vanoparadzaniswa ne Kukwirira flotation bhati zvichinyatso enderana zvavo nomumwe zvakananga negiravhiti. Zvinoita kuti vanhu vakadaro zvakatipoteredza esimbi beneficiation michina - remangwana rakajeka.