Kufamba kweparabolic kana kufamba kweprojectile rudzi rwekufamba uko chinhu chinotanga chapihwa velocity yekutanga uye kufamba kwacho kunokanganiswa zvachose nesimba regiravhiti. Kufamba kweprojectile kufamba kwemativi maviri, musanganiswa wekufamba kwakatwasuka nekwakatwasuka, kusiyana nekufamba kwakatwasuka kana kuwa kwakasununguka, izvo zviri kufamba kwemativi rimwe chete.
Galileo akatsanangura kuti kufamba kweparabolic kunogona kunzwisiswa nekutarisa zvikamu zvekufamba zvakamira uye zvakatwasuka zvakasiyana. Kukurumidza kwegiravhiti kunoshanda chete munzira yakatwasuka, kwete munzira yakatwasuka. Nokudaro, chikamu chakatwasuka chekufamba kweprojectile chinoonekwa sekufamba kwakafanana kwemutsara , uye chikamu chakatwasuka chekufamba kweparabolic chinoonekwa sekuwa kwakasununguka.
Muenzaniso wezvinetso
1. Mibvunzo yebvunzo dzenyika dzegore ra2018
Ndege inobhururuka yakatwasuka ichimhanya 300 m/s pakakwirira mamita 80 inodonhedza bhomba (g = 10 m/s 2 ). Bhomba rinorova chinangwa padaro rakatwasuka re …… metres.
Kukurukurirana
Zvinozivikanwa:
Kumhanya kwekutanga (v o ) = 300 m/s
Kureba (h) = 80 m
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s 2
Akabvunzwa: Daro rakatwasuka (x)
Mhinduro:
Nzira yekufamba kweparabolic sezvakaratidzwa mumufananidzo, kufamba kwakananga kunoongororwa sekufamba kwemahara kwekuwa uye kufamba kwakananga kunoongororwa sekufamba kwakananga kwakaenzana.
Daro rakatambanuka rinoverengwa uchishandisa fomura yekufamba yakatsetseka yakafanana.
x = vt
Tsananguro: x = daro rakatwasuka, v = kumhanya munzira yakatwasuka, t = nguva yekupfuura
Mukufamba kwakafanana kwakatwasuka, kumhanya kwechinhu hakuchinji kuitira kuti kumhanya munzira yakatwasuka = chikamu chekutanga chevelocity munzira yakatwasuka = velocity yekutanga = 300 m/s.
Nguva yenguva (t) inoverengwa uchishandisa fomura yekufamba kwemvura yakasununguka , nekuongorora kufamba kwacho munzira yakatwasuka.
h = ½ gt 2
80 = ½ (10) t 2
80 = 5 t 2
80/5 = t 2
16 = t 2
t = √16
t = masekondi maviri
Kureba kwakatwasuka:
x = vt = (300)(4) = mamita 1200
2. Mibvunzo yebvunzo dzeNyika dza2017
Bhora rinokandwa pakona yekukwirira kwe30 ° rinotevera nzira yekufananidzira sezvakaratidzwa mumufananidzo. Kukurumidza kunokonzerwa negiravhiti i10 m/s -2 , saka chiyero chekukurumidza kwemhepo panzvimbo A, B, naC ndeche...
Kukurukurirana
Kumhanya kwebhora kunosanganisira kumhanya kwenzira yakatwasuka (v y ) uye kumhanya kwenzira yakatwasuka (v x ).
Verenga v ox :
v ox = v o cos 30 o = 60 cos 30 = 60 ( 0,5 √3 ) = 30 √3 m/s
v oy = v o chivi 30 o = 60 chivi 30 = 60 (0,5) = 30 m/s
Verengai velocity yakamira pamapoinzi A, B naC.
Kumhanya kwakamira panzvimbo A:
v ty = v oy – gt = 30 – 10(1) = 30 – 10 = 20 m/s
Kumhanya kwakamira panzvimbo B:
v ty = v oy – gt = 30 – 10(2) = 30 – 20 = 10 m/s
Kumhanya kwakamira panzvimbo C:
v ty = v oy – gt = 30 – 10(3) = 30 – 30 = 0 m/s
