Mienzaniso mishanu yemibvunzo yekumhanya kwekona uye kumhanya kwetangential
1. Bhora rinosungirirwa patambo yakareba mamita maviri uye rozotenderedzwa mudenderedzwa rakatwasuka kusvika bhora rafamba nekumhanya kwakasimba kwe10 radians/sekondi. Sarudza hukuru hwekumhanya kwenzvimbo iri (a) 0,5 metres kubva padivi (b) 1 mita kubva padivi (c) pamucheto wevhiri.
Kukurukurirana
Zvinozivikanwa :
Kureba kwetambo = nharaunda yenzira yakatenderera (r) = mamita maviri
Kumhanya kwekona = 10 radians/sekondi
Akabvunzwa : kumhanya kwenzvimbo pa (a) r = 0,5 metres (b) r = 1 mita (c) r = 2 metres
Jawab :
Fomura yehukama huripo pakati pe tangential speed ne angular speed:
(A) Kumhanya kwetangential (v) kwepoindi pa r = 0,5 mamita
v = (0,5 metres)(10 rad/s) = 5 metres/sekondi
(B) Kumhanya kwetangential (v) kwepoindi pa r = 1 mamita
v = (1 metres)(10 rad/s) = 10 metres/sekondi
(C) Kumhanya kwetangential (v) kwepoindi pa r = 2 mamita
v = (2 metres)(10 rad/s) = 20 metres/sekondi
2. Kutenderera kwenguva yepropeller ine dhayamita ye20 cm i5000 rpm. Sarudza kumhanya kwenzvimbo iri (a) 5 cm kubva padivi (b) 10 cm kubva padivi kana pamucheto wepropeller.
Kukurukurirana
3. Nhanho iri pamucheto wevhiri ine radius ye30 cm inofamba yakatenderera nekumhanya kwemamita gumi pasekondi. Chii chinonzi angular velocity yevhiri?
Kukurukurirana
Zvinozivikanwa :
Nharaunda (r) = 30 cm = 0,3 metres
Kumhanya kweTangential (v) = 10 metres/sekondi
Akabvunzwa : kumhanya kwekona?
Jawab :
4. Mota inofamba mamita gumi pasekondi imwe chete. Kana dhayamita yemavhiri emota iri 50 cm, tarisa kumhanya kwemavhiri!
Kukurukurirana
Zvinozivikanwa :
Radiyo yevhiri (r) = 0,25 metres
Kumhanya kwemupendero wevhiri (v) = mamita gumi/sekondi
Akabvunzwa : kumhanya kwevhiri kwekona!
Jawab :
5. Kana kumhanya kwevhiri rine radius ye20 cm kuri 120 rpm, mota ichafamba kusvika papi kana ichifamba kwemasekonzi gumi?
Kukurukurirana
Zvinozivikanwa :
Dunhu revhiri (r) = 20 cm = 0,2 metres
Kumhanya kwevhiri kwekona = 120 revolutions / 60 seconds = 2 revolutions / second = (2)(6,28) radians / second = 12,56 radians / second
Akabvunzwa : daro rakafambwa nemota mumasekonzi gumi.
Jawab :
Kumhanya kwevhiri:
Kumhanya kwemupendero wevhiri kwemamita 2,5 pasekondi zvinoreva kuti poindi iri pamucheto wevhiri inofamba mamita 2,5 pasekondi yega yega. Mushure memasekonzi gumi, poindi iri pamucheto wevhiri yafamba mamita makumi maviri nemashanu.
Saka daro rinofambwa nemota mumasekonzi gumi i25 metres.
