Kinetic simba

Zvemukati

• Musiyano uripo pakati pekinetic simba uye simba rinogoneka
• Kinetic simba kuverenga kuverenga
• Kinetic simba zviitwa
• Mienzaniso yeinetic energy
• Dzimwe mhando dzesimba

Iyo Kinetic simba Ndicho icho muviri unowana nekuda kwekufamba kwayo uye unotsanangurwa sehuwandu hwebasa rinodiwa kuti umhanyisa muviri pakuzorora uye wehuremu hwakapihwa kumhanyisa yakatarwa.

Akadaro simba Inowanikwa kuburikidza nekumhanyisa, mushure meizvozvo chinhu chinoita kuti chirambe chakafanana kusvikira kumhanya kwasiyana (mhanyisa kana kudzikira) saka, kumira, zvinotora basa rakaipa rehukuru hwakaenzana neyakaunganidzwa simba rekinetiki. Nekudaro, iyo yakareba nguva iyo simba rekutanga rinoshanda pane muviri unofamba, nekukurumidza kumhanya kwasvika uye nekuwedzera simba reinetic rakawanikwa.

Musiyano uripo pakati pekinetic simba uye simba rinogoneka

Iyo kinetic simba, pamwe neinogona simba, inowedzera kusvika kune izere yesimba remagetsi (E_m = E_c + E_p). Idzi nzira mbiri dze michina simba, kinetics uye zvinogona, vanosiyaniswa nekuti iyo yekupedzisira ndiyo huwandu hwesimba hwakabatana nenzvimbo inogarwa nechinhu pazororo uye inogona kuve yemhando nhatu:

• Giravhiti ingangoita simba. Zvinoenderana nekukwirira kwakaiswa zvinhu uye kukwezva uko kunokwezvwa nako.
• Simba rakagadziriswa simba. Iyo ndiyo inoitika kana chinhu chakasununguka chichigadzirisa chimiro chayo chepakutanga, kunge chitubu kana chakadzvanywa.
• Magetsi anokwanisa simba. Ndiyo irimo mune basa rinoitwa nechero magetsi munda, kana magetsi emagetsi mukati mawo achifamba kubva pane imwe nzvimbo mumunda kuenda kusingaperi.

Onawo: Mienzaniso yeMagetsi Anogona

Kinetic simba kuverenga kuverenga

Kinetic simba inomiririrwa nechiratidzo E_c (dzimwe nguva zvakare E_– kana E₊ kana kunyange T kana K) uye yayo yakasarudzika yekuverenga fomula iri Uye_c = ½. m. v²uko m inomiririra huwandu (muKg) uye v inomiririra velocity (mu m / s). Chidimbu chekuyera kwesinetic energy ndiJoules (J): 1 J = 1 kg. m²/ s².

Yakapihwa Cartesian kuronga system, iyo kinetic simba rekuverenga fomula ichave neinotevera fomu: Uye_c= ½. m (ẋ² + ẏ² + ¿²)

Aya mafomati anosiyana mune relativistic mechanics uye quantum mechanics.

Kinetic simba zviitwa

1. Motokari ye860kg inofamba pa50 km / h. Chii chichava simba rayo kinetic?

Kutanga tinoshandura iyo 50 km / h kusvika m / s = 13.9 m / s uye nekuisa iyo yekuverenga fomula:

Uye_c = ½. 860 makirogiramu. (13.9 m / s)² = 83,000 J.

1. Iro dombo rine huremu hwe1500 Kg rinokungurusa pasi mutserendende nekuunganidza kinetic simba re675000 J. Padaro rinofamba sei?

Kubva Ec = ½. m .v² isu tine 675000 J = ½. 1500 makirogiramu. v², uye pakugadzirisa zvatisingazive, tinofanirwa v² = 675000 J. 2/1500 Kg. 1, yakabva kupi v² = 1350000 J / 1500 Kg = 900 m / s, uye pakupedzisira: v = 30 m / s mushure mekugadzirisa iyo mraba midzi ye 900.

Mienzaniso yeinetic energy

1. Murume ari pa skateboard. Skateboarder pakongiri U inosangana neese simba rinogona kuitika (kana rikamira kumagumo kwaro kwechinguva) uye simba reinetic (painotangazve pasi uye kumusoro kufamba). Skateboarder ine hukuru hwemuviri inowana yakakura kinetic simba, asiwo mumwe ane skateboard inomutendera kuti aende pakakwirira kumhanya.
2. Vhasi revhu rakadonha. Sezvo giravhiti rinoshanda pane yakakanganiswa vasevhosi yevhu, simba remagetsi rinowedzera mumuviri wako richidzika uye rinoburitswa richirovera pasi. Basa rekutanga rakaburitswa nekugumburwa rinomhanyisa muviri kuputsa mamiriro ehutano uye zvimwe zvese zvinoitwa negiravhiti yePasi.
3. Bhora rakakandwa. Nekudhinda simba redu pabhora pakuzorora, tinoimhanyisa zvakakwana kuti ifambe chinhambwe pakati pedu newaanotamba naye, nokudaro tichiipa simba reinetic iro ipapo, kana tichiribata, mumwe wedu anofanira kupokana nebasa rakaenzana kana rakakura hukuru.uye nekudaro kumisa kufamba. Kana bhora iri hombe zvinotora basa rakawanda kuti riimiswe pane kana riri diki.
4. Dombo riri pachikomo. Ngatitii tinosundidzira dombo kumusoro kwechikomo. Basa ratinoita patiri kurisunda rinofanira kunge rakakura kudarika simba rinokwanisa kuita dombo uye kukwezva kwesimba pahukuru hwaro, zvikasadaro hatizokwanise kurisimudza kana, zvakatoipa, rinotipwanya. Kana, saSisyphus, dombo rikaenda richidzika nemukwidza wakatarisana nerimwe divi, rinoburitsa simba rayo riite simba reinetic parinowira pasi. Iyi kinetic simba inoenderana nehukuru hwedombo uye nekumhanyisa kwainowana mukudonha kwayo.
5. Ngoro inotenderera Iyo inowana kinetic simba sezvo ichidonha uye ichiwedzera kumhanya kwayo. Nguva diki isati yatanga kudzika kwayo, ngoro ichave iine simba rinogonesa kwete simba remagetsi; Asi kana kufamba kuchinge kwatanga, simba rese rinenge rave rinova kinetic uye rinosvika pakukwirira kwaro nekukurumidza panongopera kudonha uye kukwira kutsva kwatanga. Sezvineiwo, simba iri rinenge rakakura kana ngoro izere nevanhu kupfuura kana isina chinhu (ichave nehukuru hukuru).

Dzimwe mhando dzesimba