Mienzaniso mishanu yeTheorem yaTorricelli
1. Tabhu hombe ine mvura uye ine pombi yemvura sezvakaratidzwa mumufananidzo. Kana g = 10 ms-2, maka speed mvura inopfapfaidzwa kubva mupombi iri…
A. 3 ms-1
B. 8 ms-1
C. 9 ms-1
D. 30 ms-1
E. 900 ms-1
Kukurukurirana
Zvinozivikanwa :
Kureba (h) = 85 cm – 40 cm = 45 cm = 0,45 metres
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s2
Akabvunzwa : Kumhanya kwekupfapfaidza mvura kubva papombi (v)
Jawab :
Dzidziso yaTorricelli inoti kumhanya kwekupfapfaidza mvura nepaburi riri kure h kubva pamusoro pemvura kwakafanana nekumhanya kwemvura inodonha yakasununguka kubva pakakwirira h.
Kumhanya kwemvura inopfapfaidzwa kunoverengwa uchishandisa fomura yekufamba kwemvura yakasununguka. vt2 = 2 gh
vt2 = 2 gh = 2(10)(0,45) = 9
vt = √9 = 3 m/s
Mhinduro chaiyo ndiA.
2. Tangi remvura rine mvura uye pane buri pamadziro (ona mufananidzo). Kumhanya kwemvura painobuda mugomba iri… (g = 10 ms-2)
A. 12 ms-1
B. 10 ms-1
C. 6 ms-1
D. 5 ms-1
E. 2 ms-1
Kukurukurirana
Zvinozivikanwa :
Kureba (h) = 1,5 m – 0,25 m = 1,25 mamita
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s2
Akabvunzwa : Kumhanya kwemvura kana ichibuda mugomba (v)
Jawab :
vt2 = 2 gh = 2(10)(1,25) = 25
vt = √25 = 5 m/s
Mhinduro chaiyo ndiD.
3. Dziva rine mvura yakareba mita imwe (g = 10 ms)-2) uye pamadziro pane gomba rinodonhedza mvura (ona mufananidzo). Kumhanya kwemvura inobuda mugomba iri...
A. 1 ms-1
B. 2 ms-1
C. 4 ms-1
D. 8 ms-1
E. 10 ms-1
Kukurukurirana
Zvinozivikanwa :
Kureba (h) = 1 m – 0,20 m = 0,8 mamita
Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s2
Akabvunzwa : Kumhanya kwemvura kana ichibuda mugomba (v)
Jawab :
vt2 = 2 gh = 2(10)(0,8) = 16
vt = √16 = 4 m/s
Mhinduro chaiyo ndiD.
4. Tangi remvura rine gomba diki kurudyi. Mwero wekuyerera kwemvura kubva mugomba iri…
A. Inofananidzwa na h
B. Inofananidzwa ne h1
C. Inofananidzwa ne √h
D. Inofananidzwa na h2
E. Inofananidzwa na (h1 - h2)
Kukurukurirana:
Nzira yekuyerera kwemvura kubva mugomba:
v2 = 2 gh
Tsananguro: v = kumhanya kwemvura, g = kukurumidza kwegiravhiti, h = daro regomba kubva pamusoro pemvura.
Zvichibva pafomura iri pamusoro apa, zvakagumiswa kuti mwero wekuyerera kwemvura unoenderana nemudzi we h.
Mhinduro chaiyo ndiC.
5. Mudziyo une mvura iyi une maburi maviri kumativi ese sezviri mumufananidzo uri pazasi. Buri riri kuruboshwe rakakura zvakapetwa katatu kupfuura buri riri kurudyi. Mwero wekuyerera kwemvura mugomba riri kuruboshwe = v1 uye mwero wekuyerera kwemvura mugomba riri kurudyi ndewe v2Kana daro riri pakati pemaburi maviri kubva pamusoro pemvura rakafanana saka…
A. v1 = 1/2 v2
B. v1 =v2
C. v1 = 2 v2
D. v1 = 1/4 v2
E. v1 = 4 v2
Kukurukurirana:
Zvinozivikanwa :
A1 = 3, A2 = 1, v1 =v1mu2 =v2
Akabvunzwa :
v1 uye v2 ?
Jawab :
Nzira yekuyerera kwemvura kubva mugomba:
v2= 2 gh
Kuyerera kwemvura mugomba kunoenderana chete nekumhanya kunokonzerwa negiravhiti nekukwirira. Makomba ese ari maviri ane urefu hwakafanana (h) saka v1 =v2.
Mhinduro chaiyo ndeiyi B.
