Amandla eKinetic

Amandla eKinetic

Kwisifundo se-physics seziko Amandla eKinetic. Ithathwa njengenye yezona ntlobo zibalulekileyo zokuhamba kwezinto. Nangona kunjalo, kunzima ukuqonda ukuba awunalo ulwazi olusisiseko lwe-physics.

Ke ngoko, siza kunikezela eli nqaku ukuba likuxelele yonke into oyifunayo malunga namandla ekinetic kunye neempawu zayo eziphambili.

Yintoni amandla ekinetic

Xa bethetha ngolu hlobo lwamandla, abantu bacinga ngalo njengamandla afunyenwe ukwenza umbane okanye into efanayo. Amandla eKinetic ngamandla anayo into ngenxa yokuhamba kwayo. Xa sifuna ukukhawulezisa into, kufuneka sisebenzise amandla athile ukoyisa ukubambana komhlaba okanye umoya. Ngenxa yoku, kufuneka senze umsebenzi. Ke ngoko, sithumela amandla kwinto kwaye inokuhamba ngesantya esingaguquguqukiyo.

Yile amandla agqityiweyo abizwa ngokuba yi-kinetic energy. Ukuba amandla asetyenzisiweyo kwinto ayanda, into iya kukhawulezisa. Nangona kunjalo, ukuba siyayeka ukusebenzisa amandla kuyo, amandla ayo e-kinetic aya kuncipha ngokuxubana ade ayeke. Amandla eKinetic axhomekeke kubunzima nakwisantya sento leyo.

Amalungu anobunzima obuncinci afuna umsebenzi omncinci ukuqala ukuhamba. Ngokukhawuleza uhamba, amandla amaninzi akho emzimbeni wakho. La mandla angadluliselwa kwizinto ezahlukeneyo kwaye phakathi kwawo atshintshe abe lolunye uhlobo lwamandla. Umzekelo, ukuba umntu ubaleka aze adibane nomnye owayephumle, inxenye yamandla e-kinetic awayekwiimbaleki iya kudluliselwa komnye umntu. Amandla ekufuneka esetyenziselwe intshukumo ukuze ibekhona kufuneka ahlala emkhulu kunamandla okuxubana emhlabeni okanye olunye ulwelo njengamanzi okanye umoya.

Ukubalwa kwamandla ekinetic

Isantya kunye nomsebenzi

Ukuba sifuna ukubala ixabiso la mandla, kufuneka silandele ukuqiqa okuchazwe ngasentla. Okokuqala, siqala ngokufumana umsebenzi ogqityiweyo. Kuthatha umsebenzi ukuhambisa amandla e-kinetic ukuya kwinto. Kananjalo, kuthathelwa ingqalelo ubunzima bezinto ezityhalwa umgama, umsebenzi kufuneka uphindwe ngokunyanzelwa. Umkhosi kufuneka uhambelane nomphezulu okuwo, kungenjalo into leyo ayisayi kuhamba.

Khawufane ucinge ukuba ufuna ukuhambisa ibhokisi, kodwa uyityhale uyise emhlabeni. Ibhokisi ayinakukwazi ukoyisa ukuxhathisa komhlaba kwaye ayizukuhamba. Ukuze ihambe, kufuneka sisebenzise umsebenzi kwaye sinyanzele kwicala elilinganayo nomphezulu. Siza kuwubiza umsebenzi W, amandla F, ubunzima bento m, kunye nomgama d. Umsebenzi ulingana namaxesha okunyanzelwa komgama. Oko kukuthi, umsebenzi owenziweyo ulingana namandla asetyenziswa kwinto leyo kunye nomgama ohamba kuwo ubulela kuloo mandla asetyenzisiweyo. Inkcazo yamandla inikwa ngobunzima kunye nokukhawulezisa kwento. Ukuba into ihamba ngesantya esingaguqukiyo, oko kuthetha ukuba amandla asetyenziswayo kunye nomlo wokungqubana unexabiso elifanayo. Ke ngoko, yimikhosi egcinwa ibhalansi.

Imikhosi ebandakanyekayo

Izinto ezinomdla malunga namandla e-kinetic

Nje ukuba amandla asetyenzisiweyo entweni anciphise, iya kuqala ukuphakama de iyeke. Umzekelo olula kakhulu yimoto. Xa siqhuba ezindleleni, i-asphalt, ukungcola, njl. Indlela isinika ukuxhathisa. Olu xinzelelo lubizwa ngokuba kukungqubana phakathi kwevili kunye nomphezulu. Ukunyusa isantya semoto, kufuneka sitshise ipetroli ukuze sivelise amandla e-kinetic. Ngalo mandla, Unokoyisa ukungqubana kwaye uqale ukuhamba.

Nangona kunjalo, ukuba sihamba nemoto kwaye siyeke ukukhawulezisa, siya kuyeka ukusebenzisa amandla. Kwimeko yokungabikho kwayo nayiphi na into emotweni, amandla okuxubana awayi kuqala ukubopha de imoto ime. Ke ngoko, kubalulekile ukuba uqonde kakuhle amandla enkqubo yokungenelela ukuze uqonde umkhombandlela oza kuthathwa.

Ifomula yamandla eKinetic

Ifomula yamandla eKinetic

Ukubala amandla e-kinetic kukho i-equation evela kwingqiqo esetyenziswe ngaphambili. Ukuba siyayazi isantya sokuqala kunye nesokugqibela sento emva komgama ohanjiweyo, sinokufaka endaweni yokukhawulezisa kwifom.

Ke ngoko, xa isixa semali somsebenzi senziwe kwinto, isixa esisibiza ngokuba namandla e-kinetic k siyatshintsha.

Kwifiziksi, ukuqonda amandla e-kinetic yento kubalulekile ekufundeni amandla ayo. Kukho imizimba yasezulwini esithubeni enayo amandla e-kinetic aqhutywa yi-Big Bang kwaye asaqhubeka nanamhlanje. Kuyo yonke inkqubo yelanga, zininzi izinto ezinomdla onokuzifunda, kwaye kubalulekile ukuqonda amandla e-kinetic ukuqikelela imikhondo yabo.

Xa sijonga i-kinetic energy equation, siyabona ukuba ixhomekeke kwisikwere sento yento. Oku kuthetha ukuba xa isantya siphindwe kabini, amandla ayo anyuka amatyeli amane. Ukuba imoto ihamba nge-100 km / h, amandla ayo aphindwe kane kunawo wemoto ehamba nge-50 km / h. Ke ngoko, umonakalo onokubangelwa yingozi mkhulu ngokuphindwe kane kunowengozi.

La mandla akanakuba lixabiso elibi. Ihlala ihleli ingu-zero okanye i-positive. Ngokungafaniyo nayo, isantya sinokuba nexabiso elifanelekileyo okanye elibi ngokuxhomekeka kwisalathiso. Kodwa xa usebenzisa isantya esiphindwe kabini, uhlala ufumana ixabiso elifanelekileyo.

Umzekelo osebenzayo

Masithi siseklasini ye-astronomy kwaye sifuna ukubeka ibhola yephepha kumgqomo wenkunkuma. Emva kokubala umgama, amandla kunye nendlela yokuhamba, kuya kufuneka sisebenzise inani elithile lamandla e-kinetic kwibhola ukuyisusa esandleni sethu iye kumgqomo wenkunkuma. Ngamanye amagama, kufuneka siyisebenzise. Xa ibhola yephepha ishiya isandla sethu, iya kuqala ukukhawulezisa, kwaye amandla ayo alinganayo aya kutshintsha ukusuka ku-zero (ngelixa sisesandleni) ukuya ku-X, kuxhomekeke ekubeni ifikelela ngokukhawuleza kangakanani na.

Kwibhola ekhutshiweyo, ibhola iya kufikelela kwelona nani liphezulu lamandla e-kinetic mzuzu xa ifikelela kwelona nqanaba liphezulu. Ukusuka apho, njengoko uqala ukwehla kumgqomo wenkunkuma, amandla akho e-kinetic aya kuqala ukwehla njengoko etsalwa ngumxhuzulane aze aguqulwe abe ngamandla. Xa ifikelela ezantsi kumgqomo wenkunkuma okanye emhlabeni kwaye iyeke, ukungalingani kwamandla e-kinetic ebhola lephepha kuya kubuyela kwi-zero.

Ndiyathemba ukuba olu lwazi ungafunda ngakumbi malunga namandla e-kinetic kunye neempawu zawo.


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