Mehlala e 5 ea lipotso tsa lebelo la angular le lebelo la tangential
1. Bolo e tlangwa ka thapo e bolelele ba limithara tse 2 ebe e potoloha ka selikalikoe se otlolohileng ho fihlela bolo e tsamaea ka lebelo le sa fetoheng la li-radian tse 10/motsotsoana. Fumana boholo ba lebelo la tangential la ntlha e leng (a) limithara tse 0,5 ho tloha ho axis (b) limithara tse 1 ho tloha ho axis (c) moeling oa lebili.
Puisano
Hoa tsebahala :
Bolelele ba thapo = radius ea tsela e chitja (r) = limithara tse 2
Lebelo la Angular = 10 radians/motsotsoana
E botsitsoe : lebelo la tangential la ntlha ho (a) r = 0,5 metres (b) r = 1 meter (c) r = 2 metres
Jawab :
Foromo ea kamano pakeng tsa lebelo la tangential le lebelo la angular:
(A) Lebelo la tangential (v) la ntlha ho r = 0,5 metres
v = (limithara tse 0,5)(10 rad/s) = limithara tse 5/motsotsoana
(B) Lebelo la tangential (v) la ntlha ho r = 1 metres
v = (limithara tse 1)(10 rad/s) = limithara tse 10/motsotsoana
(C) Lebelo la tangential (v) la ntlha ho r = 2 metres
v = (limithara tse 2)(10 rad/s) = limithara tse 20/motsotsoana
2. Lebelo la ho potoloha ha propela ea bophara ba 20 cm ke 5000 rpm. Fumana lebelo la tangential la ntlha e leng (a) 5 cm ho tloha mothating (b) 10 cm ho tloha mothating kapa moeling oa propela.
Puisano
3. Ntlha e ka lehlakoreng la lebili le nang le radius ea 30 cm e tsamaea ka selikalikoe ka lebelo la limithara tse 10/motsotsoana. Lebelo le ka lehlakoreng la lebili ke lefe?
Puisano
Hoa tsebahala :
Radius (r) = 30 cm = 0,3 metres
Lebelo la tangential (v) = limithara tse 10/motsotsoana
E botsitsoe : lebelo la angular ?
Jawab :
4. Koloi e tsamaya dimithara tse 10 motsotsoana o mong le o mong. Haeba bophara ba mabili a koloi e le 50 cm, fumana lebelo le kgutlotharo la mabili!
Puisano
Hoa tsebahala :
Radiyo ya lebili (r) = dimithara tse 0,25
Lebelo la lehlakore la lebili (v) = limithara tse 10/motsotsoana
E botsitsoe : lebelo le potolohang la lebili!
Jawab :
5. Haeba lebelo le potolohang la lebili le nang le radius ea 20 cm e le 120 rpm, koloi e tla tsamaea hole hakae ha e tsamaea metsotsoana e 10?
Puisano
Hoa tsebahala :
Radiyo ya lebili (r) = 20 cm = 0,2 metres
Lebelo la angular la lebili = diphetoho tse 120 / metsotsoana e 60 = diphetoho tse 2 / motsotsoana = (2)(6,28) di-radian / motsotsoana = di-radian tse 12,56 / motsotsoana
E botsitsoe : sebaka se tsamauoang ke koloi ka metsotsoana e 10.
Jawab :
Lebelo la mabili a mabili:
Lebelo la lehlakore la lebili la limithara tse 2,5 ka motsotsoana le bolela hore ntlha e le 'ngoe lehlakoreng la lebili e tsamaea limithara tse 2,5 motsotsoana o mong le o mong. Kamora metsotsoana e 10, ntlha e le 'ngoe lehlakoreng la lebili e se e tsamaile limithara tse 25.
Kahoo sebaka seo koloi e se tsamayang ka metsotsoana e 10 ke limithara tse 25.
