Amandla eKinetic

Umxholo

• Umahluko phakathi kwamandla e-kinetic kunye namandla anokubakho
• Ifomula yokubala yamandla eKinetic
• Ukuzivocavoca kwamandla eKinetic
• Imizekelo yamandla ekinetic
• Ezinye iintlobo zamandla

Inkqubo ye- Amandla eKinetic Yile nto ifunyanwa ngumzimba ngenxa yokuhamba kwayo kwaye ichazwa njengesixa somsebenzi esifunekayo ukukhawulezisa umzimba xa uphumle kunye nobunzima obunikiweyo kwisantya esimiselweyo.

Uthe amandla Ifunyenwe ngokukhawulezisa, emva koko into iya kuyigcina ifana de isantya sahluka (ukukhawulezisa okanye ukucothisa) ke, ukuyeka, kuya kuthatha umsebenzi ongalunganga wobungakanani obufanayo namandla ayo e-kinetic aqokelelweyo. Ke ngoko, ixesha elide apho amandla okuqala esebenza emzimbeni ohambayo, isantya esikhudlwana ukufikelela kunye namandla amakhulu e-kinetic afunyenweyo.

Umahluko phakathi kwamandla e-kinetic kunye namandla anokubakho

Amandla e-kinetic, kunye namandla anokubakho, adibanisa ukuya kuthi ga kumandla oomatshini (E_m = E_c + E_iphe). Ezi ndlela zimbini ze amandla oomatshini, kinetics kunye nokubanakho, bahlukile kuba le yokugqibela sisixa samandla esihambelana nendawo ekuhlalwa kuyo ngento ekuphumleni kwaye inokuba ziindidi ezintathu:

• Amandla omxhuzulane anokubakho. Kuxhomekeka kubude obubekwe kubo izinto kunye nomtsalane onokuthi ubekho kumxhuzulane.
• Amandla amandla anokubakho. Yiyo eyenzekayo xa into yelastiki ibuyisa imilo yayo yentsusa, njengentwasahlobo xa idandathekile.
• Amandla ombane anokubakho. Yeyona iqulethwe ngumsebenzi owenziwa licandelo elithile lombane, xa umbane wentlawulo ngaphakathi uhamba usuka kwindawo yentsimi uye kubomi obungapheliyo.

Bona kwakho: Imizekelo yamandla anokubakho

Ifomula yokubala yamandla eKinetic

Amandla eKinetic amelwe luphawu E_c (ngamanye amaxesha no-E_– okanye E₊ okanye T okanye K) kunye nefomula yokubala yeklasi KUNYE_c = ½. m. v²apho m imele ubunzima (kwiKg) kwaye v imele isantya (kwi m / s). Iyunithi yokulinganisa kwamandla e-kinetic yiJoules (J): 1 J = 1 kg. m²/ s².

Ukunikezelwa kwenkqubo yokulungelelanisa yeCartesian, ifomula yokubalwa kwamandla e-kinetic iya kuba nale ndlela ilandelayo: KUNYE_c= ½. m (ẋ² + ẏ² + ¿²)

Ezi fomathi ziyahluka ngoomatshini abachaphazelekayo kunye noomatshini bokulinganisa.

Ukuzivocavoca kwamandla eKinetic

1. Imoto eyi-860kg ihamba nge-50 km / h. Iyakuba yintoni amandla ayo ekinetic?

Kuqala siguqula i-50 km / h ukuya m / s = 13.9 m / s kwaye sisebenzise ifom yokubala:

KUNYE_c = ½. 860 kg. (13.9 m / s)² = Ama-83,000 uJ.

1. Ilitye elinobunzima obuyi-1500 Kg liqengqa phantsi ithambeka eliqokelela amandla e-kinetic angama-675000 J. Lihamba ngesantya esingakanani ilitye?

Ukusukela ku-Ec = ½. m .v² sine-675000 J = ½. I-1500 Kg. v², kwaye xa sisombulula okungaziwayo, kufuneka v² = 675000 J. 2/1500 kg. 1, apho v² = 1350000 J / 1500 Kg = 900 m / s, kwaye ekugqibeleni: v = 30 m / s emva kokusombulula ingcambu yesikwere engama-900.

Imizekelo yamandla ekinetic

1. Indoda ebhodini. I-skateboarder kwikhonkrithi ye-U yamava omabini amandla anokubakho (xa eyeka eziphelweni zawo okomzuzwana) kunye namandla e-kinetic (xa iqala kwakhona ukuhla nokunyukela phezulu). I-skateboarder enobunzima bomzimba omkhulu iya kufumana amandla amakhulu e-kinetic, kodwa ikwakhona ne-skateboard emvumela ukuba ahambe ngesantya esiphezulu.
2. Ivazi ye-porcelain ewayo. Njengoko amandla omxhuzulane esebenza kwivazi ye-porcelain ekhubeke ngengozi, amandla e-kinetic ayakha emzimbeni wakho njengoko usihla kwaye ukhutshwa njengoko utshayisa umhlaba. Umsebenzi wokuqala oveliswa sisikhubekiso ukhawulezisa umzimba ngokwaphula imeko yawo wokulingana kwaye yonke into yenziwa ngumxhuzulane woMhlaba.
3. Ibhola ephosiweyo. Ngokushicilela amandla ethu kwibhola ekuphumleni, siyikhawulezisa ngokwaneleyo ukuze ihambe umgama phakathi kwethu nomlingane, ngaloo ndlela siyinike amandla e-kinetic ukuze, xa sijongana nayo, iqabane lethu kufuneka lilwe nomsebenzi olinganayo okanye omkhulu kwaye uyeke intshukumo. Ukuba ibhola inkulu kuya kuthatha umsebenzi omninzi ukuyimisa kunokuba incinci.
4. Ilitye entabeni. Masithi sityhala ilitye phezulu kwinduli. Umsebenzi esiwenzayo xa sityhala kufuneka ube mkhulu kunamandla elitye elinokubakho kunye nomtsalane womxhuzulane kubunzima balo, kungenjalo asiyi kuba nakho ukulinyusa okanye, okubi ngakumbi, liya kusityumza. Ukuba, njengoSisyphus, ilitye lehla ithambeka eliya kwelinye icala, liya kuthi likhulule amandla alo amandla kwi-kinetic energy njengoko iwela ezantsi. Amandla e-kinetic aya kuxhomekeka kubunzima belitye kunye nesantya esifumana ekuweni kwayo.
5. Inqwelo yokulwa eroliweyo Ifumana amandla e-kinetic njengoko iwa kwaye inyusa isantya sayo. Imizuzwana ngaphambi kokuba iqale ukwehla kwayo, inqwelo iya kuba namandla kwaye ingabi namandla ekinetic; Kodwa xa intshukumo iqalile, onke amandla anokubakho aba yikinetic kwaye afikelele kwinqanaba lawo kwangoko kwakuphela ukuwa kunye nokunyuka okutsha kuqala. Ngesiqhelo, la mandla aya kuba maninzi ukuba inqwelo igcwele ngabantu kunokuba ingenanto (iya kuba nobunzima obukhulu).

Ezinye iintlobo zamandla