1. Ntho e tsamaya ka sedikadikwe ka lebelo le sa fetoheng la angular la 10 rad/s. Fumana (a) Lebelo la angular kamora metsotsoana e 10 (b) Ho falla ha angular kamora metsotsoana e 10.
Tse tsejoang:
Lebelo la Angular (ω) = 10 rad/s
Ho batloa:
(a) Lebelo la Angular (ω) kamora metsotsoana e 10.
(b) Sekhutlo (θ) kamora metsotsoana e 10
Tharollo:
(a) Lebelo la Angular (ω) kamora metsotsoana e 10
Ntho e tsamaya ka motsamao o chitja o tshwanang e le hore lebelo la angular le dule le le teng, 10 rad/s.
(b) Ho falla ha Angular (θ)
Lebelo le sa fetoheng la angular 10 radians/motsotswana le bolela ntho e potolohileng 10 radians ka motsotsoana. Kamora metsotsoana e 10, ntho e potolohileng 10 x 10 radians = 100 radians.
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2. Phatsa e tsamaya ka sedikadikwe ka lebelo le sa fetoheng la 10 m/s. Radius ya sedikadikwe = mithara e le 1. Fumana (a) Lebelo la phatsa ka mora metsotswana e 5 (b) Ho falla ha phatsa ka mora metsotswana e 5 (c) Ho potlakisa bohareng ba sedikadikwe.
Tse tsejoang:
Radius ea selikalikoe (r) = 1 meter
Lebelo la karoloana (v) = 10 m/s
Tharollo:
(a) Lebelo la karoloana ka mora metsotsoana e 5
Motsamao oa ntho o ka har'a motsamao o chitja o tšoanang e le hore lebelo le lule le tsitsitse, 10 m/s.
(b) Ho falla ha karoloana ka mora metsotsoana e 5
Limithara tse 10 ka motsotsoana li bolela motsotsoana o mong le o mong, ho falla ha karoloana = limithara tse 10. Kamora metsotsoana e 5, ho falla ha karoloana = limithara tse 5 x 10 = limithara tse 50.
(c) Ho potlaka ha centripetal (a r )
a r = v 2 / r = 10 2 / 1 = 100 / 1 = 100 m/s 2
3. Bolo e hoketsweng pheletsong e 'ngoe ea thapo, e potoloha ka selikalikoe se nang le radius ea limithara tse 2 ka lebelo le sa fetoheng la 60 rpm. Fumana (a) boholo ba lebelo la angular kamora metsotsoana e 2 (b) ho falla ha angular kamora motsotso o le mong.
Tse tsejoang:
Radius ea selikalikoe (r) = limithara tse 2
Lebelo la Angular (ω) = 60 rpm = diphetoho tse 60 / motsotso o le 1
= Diphetoho tse 60 / Metsotsoana e 60 = Phetoho e le 1 / Motsotsoana = Di-radian tse 2π / Motsotsoana
= 2(3.14) radians / motsotsoana = 6.28 radians / motsotsoana
Tharollo:
(a) Lebelo la Angular (ω) kamora metsotsoana e 2
Lebelo la angular ha le fetohe kahoo kamora metsotsoana e 2, lebelo la angular (ω) = 6.28 radians / motsotsoana
(b) Ho falla ha Angular (θ)
Lebelo la angular = phetohelo e le 'ngoe/motsotswana le bolela hore motsotsoana o mong le o mong, bolo e ba le phetoho e le 'ngoe. Kamora metsotsoana e 60, bolo e tsamaea ka makhetlo a 60.
Lebelo la angular = 6.28 radians/motsotswana le bolela hore motsotsoana o mong le o mong, bolo e tsamaya ka sekhutlo sa 6.28 radians. Kamora metsotsoana e 60, bolo e tsamaya ka 376.8 radians.
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4. Lebili la baesekele le potoloha diphetoho tse 120 ka metsotswana e 60. Lebelo le nang le dikhutlo tse pedi ke lefe?
Tharollo:
(a) diphetoho ka motsotso (rpm)
Liphetoho tse 120 / metsotsoana e 60 = liphetoho tse 120 / motsotso o le 1 = liphetoho tse 120 / motsotso = 120 rpm
(b) di-degree ka motsotsoana ( o /s)
Phetoho e le 'ngoe = 360 o , liphetoho tse 120 = 43200 o
Liphetoho tse 120 / metsotsoana e 60 = (120)(360 o ) / metsotsoana e 60 = 43200 o / metsotsoana e 60 = 720 o /motsotsoana
(c) radians ka motsotsoana (rad/s)
Phetoho e le 'ngoe = li-radian tse 6.28
Diphetoho tse 120 / metsotsoana e 60 = (120)(6.28) di-radian / metsotsoana e 60 = di-radian tse 753.6 / metsotsoana e 60 = di-radian tse 12.56/motsotswana.
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[ID ea sephutheloana sa wpdm='432′]
[ID ea sephutheloana sa wpdm='439′]
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