Amandla e-Kinetic: izinhlobo, incazelo, ifomula nezibonelo

Impela ufunde esikhungweni amandla kinetic esihlokweni se-physics. Uma kungenjalo, kungenzeka ukuthi uke wezwa ngakho ocwaningweni lwesayensi noma kwabezindaba. Futhi kubhekwa njengamandla abaluleke kakhulu ekutadisheni ukuhamba kwezinto. Kunabantu abangakacaci ngomqondo wamandla we-kinetic noma ukuthi ulinganiswa noma usebenza kanjani. Kulesi sihloko sizobuyekeza incazelo nezinsiza lo mandla anazo emhlabeni we-physics.

Ngabe ufuna ukwazi konke okuhlobene namandla we-kinetic? Kumele uqhubeke ufunda ukuze ufunde konke 🙂

Iyini incazelo yamandla ekinetic?

Lapho kukhulunywa ngalolu hlobo lwamandla, kucatshangwa ukuthi amandla athile atholakala ukukhiqiza ugesi noma into efana naleyo. Amandla we-Kinetic amandla into anayo ngoba iyahamba. Lapho sifuna ukusheshisa into, kufanele sisebenzise amandla athile kuyo ukuze inqobe amandla okushayisana phansi noma emoyeni. Ukwenza lokhu, ngenxa yalokhu, sidlulisa amandla entweni futhi izokwazi ukuhamba ngejubane elingaguquguquki.

Yilawo mandla adlulisiwe abizwa nge-kinetic energy. Uma amandla asetshenziswe entweni ekhula, into izoshesha. Kodwa-ke, uma siyeka ukusebenzisa amandla kuyo, ngamandla omfutho amandla ayo e-kinetic azokwehla ize iyeke. Amandla we-Kinetic ancike ebunzimeni nasejubaneni lokho kufinyelela entweni. Imizimba enobunzima obuncane idinga umsebenzi omncane ukuze iqale ukunyakaza. Uma uhamba ngokushesha, amandla we-kinetic umzimba wakho unawo.

Amandla la ingadluliselwa ezintweni ezahlukahlukene futhi phakathi kwabo ukuguqula kube olunye uhlobo lwamandla. Isibonelo, uma umuntu egijima futhi eshayisana nomunye owayephumule, ingxenye yamandla ekinetic eyayikumgijimi izodluliselwa komunye umuntu. Amandla okumele asetshenziselwe ukunyakaza ukuba khona kufanele ngaso sonke isikhathi abe mkhulu kunamandla okuhilizisana nomhlabathi noma olunye uketshezi njengamanzi noma umoya.

Izinhlobo ze-Kinetic energy

Izinhlobo ezimbili ziyahlukaniswa:

Amandla we-kinetic wokuhumusha: kwenzekani lapho into ichaza umugqa oqondile.
Amandla we-Rotational kinetic: yilokho okwenzeka lapho into iziphendukela.

Ngabe i-kinetic energy ibalwa kanjani?

Uma sifuna ukubala inani lale mandla, kufanele silandele ukucabanga okuchazwe ngenhla. Okokuqala, siqala ngokuthola umsebenzi wenziwe. Umsebenzi udinga ukwenziwa ukudlulisa amandla we-kinetic entweni. Futhi, lowo msebenzi kufanele uphindwe ngamandla, kubhekwe ubukhulu bento edudulwa ibanga. Amandla kufanele afane nendawo lapho ikhona, uma kungenjalo into ngeke ihambe.

Cabanga ukuthi ufuna ukuhambisa ibhokisi, kepha ucindezela phansi. Ibhokisi ngeke likwazi ukunqoba ukumelana komhlaba futhi ngeke lihambe. Ukuze sikwazi ukuhamba, kufanele sisebenzise umsebenzi futhi siphoqelele ekuqondeni okulingana naphezulu.

Sizobiza emsebenzini W, amandla F, ubukhulu bento m, nebanga d.

Umsebenzi ulingana nebanga lezikhathi zamandla. Okusho ukuthi, umsebenzi owenziwayo ulingana namandla asetshenziswa entweni ngebanga eliyihambayo ngenxa yalowo mandla asetshenzisiwe. Incazelo yamandla inikezwa ngobuningi nokusheshisa kwento. Uma into ihamba ngejubane elingaguquguquki, kusho ukuthi amandla asetshenziswayo namandla okuxubana anenani elifanayo. Ngakho-ke, zingamandla agcinwa esilinganisweni.

Amandla Frictional nokusheshisa

Lapho nje inani lamandla asetshenziswa entweni lehla, lizoqala ukwehla kancane lize liyeke. Isibonelo esilula yimoto. Lapho sishayela emgwaqeni omkhulu, i-asphalt, ukungcola, njll. Esishayela kuye kusinikeza ukumelana. Lokhu kuzabalaza kunjalo eyaziwa njenge-friction force phakathi kwesondo nobuso. Ukuze imoto ikwazi ukukhuphula ijubane layo, kufanele sishise uphethiloli ukukhiqiza amandla kagesi. Ngala mandla unganqoba ukungqubuzana bese uqala ukuhamba.

Kodwa-ke, uma sihamba nemoto futhi siyeka ukushesha, sizobe sima ukusebenzisa amandla. Ngaphandle kwamandla emotweni, umbango ngeke uqale ukubhuleka ize ime imoto. Ngalesi sizathu, kubalulekile ukwazi kahle amandla angenela ohlelweni ukwazi ukuthi iyiphi into ezothatha.

Ifomula yamandla ka-Kinetic

Ukubala amandla we-kinetic kune-equation evela ekucabangeni okusetshenziswe ngaphambilini. Uma sazi isivinini sokuqala nesokugcina sento ngemuva kwebanga elihanjiwe, singafaka esikhundleni ukusheshisa kwifomula.

Ngakho-ke, lapho inani eliphelele lomsebenzi lenziwe entweni, inani esilibiza ngokuthi amandla we-kinetic izinguquko.

Yini okuthakazelisayo ngakho?

Kososayensi, ukwazi amandla we-kinetic wento kubalulekile ukutadisha amandla ayo. Kunezinto zasezulwini ezisemkhathini ezinamandla we-kinetic aqhutshwa yi-Big Bang, kuze kube namuhla, asasebenza. Kuwo wonke amaSolar System kunezinto ezithokozisayo okufanele zifundwe futhi kuyadingeka ukwazi amandla azo okuqagela ukuqagela umkhondo wazo.

Lapho sihlaziya i-equation yamandla we-kinetic kungabonakala ukuthi kuya ngejubane lento ephindwe kabili. Lokhu kusho ukuthi lapho ijubane liphindeka kabili, i-kinetics yalo iphindaphindwe kane. Uma imoto ihamba ngo-100km / h unamandla aphindwe kane kunalowo ohamba ngo-50km / h. Ngakho-ke, umonakalo ongaba nawo engozini unamandla aphindwe kane koyedwa kunakwenye.

La mandla awakwazi ukuba yinani elibi. Kufanele ngaso sonke isikhathi kube uziro noma iphozithivu. Ngokungafani nayo, isivinini singaba nenani elihle noma elibi ngokuya ngesethenjwa. Kepha uma usebenzisa i-velocity squared, uhlala uthola inani elihle.

Izibonelo zamandla we-kinetic

Ake sibheke ezinye izibonelo zamandla we-kinetic ukwenza kucace:

Lapho sibona umuntu esikrinini sibona ukuthi uyabhekana ukwanda kwamandla womabili lapho uhambela ukuphakama namandla we-kinetic ngejubane elikhulayo. Umuntu onesisindo esikhulu somzimba uzokwazi ukuthola amandla amakhulu we-kinetic inqobo nje uma i-scooter imvumela ukuba asheshe.
I-vase ye-porcelain ewela phansi: Lolu hlobo lwesibonelo lubalulekile ekuqondeni amandla e-kinetic. Amandla akhela emzimbeni wakho njengoba ehla futhi akhululwa ngokuphelele lapho ephuka ekushayeni phansi. Kuyinto ukushaywa kokuqala okuqala ukukhiqiza amandla we-kinetic. Amanye amandla e-kinetic atholakala ngamandla adonsela phansi eMhlabeni.
Ukushaya ibhola: Icala elifana nalokho okwenzekayo nge-vase. Ibhola ekuphumuleni lithola ukulingana futhi amandla e-kinetic aqala ukukhishwa kusukela lapho silishaya. Ibhola elisindayo nelikhulu, kuzothatha umsebenzi omningi ukumisa noma ukulihambisa.
Lapho siphonsa itshe phansi emthambekeni: kwenzeka ngendlela efanayo nevazi nebhola. Njengoba idwala lehla emthambekeni, amandla alo e-kinetic ayanda. Amandla azoncika ebunzimeni nasejubaneni lokuwa kwalo. Lokhu nakho kuzoncika emthambekeni.
Imoto yama-roller coaster: amapaki wokuzijabulisa ayisihluthulelo sokuchaza amandla e-kinetic. Ku-roller coaster, imoto ithola amandla we-kinetic njengoba iwa futhi inyusa ijubane layo.

Ngiyethemba ukuthi ngalolu lwazi umqondo nokusetshenziswa kwawo kuzokucacela kakhulu.

Thola le jimu esebenza ngamandla we-kinetic: