Zitsanzo 5 za mafunso okhudza liwiro la angular ndi liwiro la tangential
1. Mpira umamangiriridwa ku chingwe cha mamita awiri kenako n’kuzunguliridwa mozungulira mpaka mpirawo ukuyenda ndi liwiro lokhazikika la ma radian 10/sekondi. Dziwani kukula kwa liwiro la tangential la mfundo yomwe ndi (a) mamita 0,5 kuchokera ku mzere (b) mita imodzi kuchokera ku mzere (c) m’mphepete mwa gudumu.
Zokambirana
Ndizodziwika kuti :
Kutalika kwa chingwe = utali wa njira yozungulira (r) = mamita awiri
Liwiro la angular = ma radians 10/sekondi
Anafunsa : liwiro la tangential la mfundo pa (a) r = 0,5 mamita (b) r = 1 mita (c) r = 2 mamita
Yankhani :
Fomula yolumikizirana pakati pa liwiro la tangential ndi liwiro la angular:
(a) Liwiro la tangential (v) la mfundo pa r = mamita awiri
v = (mamita awiri)(10 rad/s) = mamita 5/sekondi
(b) Liwiro la tangential (v) la mfundo pa r = mamita awiri
v = (mamita awiri)(10 rad/s) = mamita 10/sekondi
(c) Liwiro la tangential (v) la mfundo pa r = mamita awiri
v = (mamita awiri)(10 rad/s) = mamita 20/sekondi
2. Kuzungulira kwa propela ya mainchesi 20 ndi 5000 rpm. Dziwani liwiro la tangential la mfundo yomwe ndi (a) 5 cm kuchokera ku axis (b) 10 cm kuchokera ku axis kapena m'mphepete mwa propela.
Zokambirana
3. Mfundo yomwe ili m'mphepete mwa gudumu lokhala ndi utali wa masentimita 30 imayenda mozungulira pa liwiro la mamita 10/sekondi. Kodi liwiro la gudumulo ndi lotani?
Zokambirana
Ndizodziwika kuti :
Ulalo wozungulira (r) = 30 cm = 0,3 mamita
Liwiro la Tangential (v) = mamita 10/sekondi
Anafunsa : liwiro la angular ?
Yankhani :
4. Galimoto imayenda mamita 10 pa sekondi imodzi iliyonse. Ngati kukula kwa mawilo a galimotoyo ndi masentimita 50, dziwani liwiro la mawilowo!
Zokambirana
Ndizodziwika kuti :
Utali wa mawilo (r) = mamita 0,25
Liwiro la m'mphepete mwa gudumu (v) = mamita 10/sekondi
Anafunsa : liwiro la gudumu!
Yankhani :
5. Ngati liwiro la gudumu lokhala ndi utali wa masentimita 20 ndi 120 rpm, galimotoyo idzayenda mtunda wotani ikasuntha kwa masekondi 10?
Zokambirana
Ndizodziwika kuti :
Utali wa mawilo (r) = 20 cm = 0,2 mamita
Liwiro la gudumu = ma revolution 120 / masekondi 60 = ma revolution 2 / sekondi = (2)(6,28) ma radians / sekondi = ma radians 12,56 / sekondi
Anafunsa : mtunda woyenda ndi galimoto mu masekondi 10.
Yankhani :
Liwiro la mkombero wa gudumu:
Liwiro la m'mphepete mwa gudumu la mamita 2,5 pa sekondi limatanthauza kuti mfundo imodzi m'mphepete mwa gudumu imasuntha mamita 2,5 pa sekondi iliyonse. Pambuyo pa masekondi 10, mfundo yomwe ili m'mphepete mwa gudumu imasuntha mamita 25.
Kotero mtunda umene galimotoyo imadutsa mu masekondi 10 ndi mamita 25.
