Marangrang a Gurumuda
Likhohlano - mathata le litharollo
1. Ntho A (3 kg) e tsamaya ka lebelo la 8 m/s mme ntho B (5 kg) e tsamaya ka lebelo la 4 m/s. Haeba ho thulana pakeng tsa dintho A le B ho tenyetseha ka ho phethahetseng, ke eng Velocity ea lintho A le B kamora ho thulana?
Tse tsejoang:
Boholo ea ntho A (m1) = 3 kg
Boima ba ntho B (m2) = 5 kg
The lebelo ea ntho A (v1) = 8 ms-1
Lebelo la ntho B (v)2) = 4 ms-1
Li-vector tsa yuniti - mathata le litharollo
1. Ntho e tsamaya ho Velocity ea v = (2i − 1.5j) m/s. Ke eng ho baleha ea ntho eo ka mor'a metsotsoana e 4?
Tse tsejoang:
Karolo e rapameng ea lebelo (v)x) = 2 m/s
Karolo e otlolohileng ea lebelo (v)y) = 1.5 m/s
Nako ea ho arohana (t) = metsotsoana e 4
Ho batloa: Ho tlosoa
Ho falla ha li-vector - mathata le litharollo
1. Motho o tsamaea ho tloha ntlheng ea A ho ea ntlheng ea B, limithara tse 600 ka leboea; ebe o ea ntlheng ea C, limithara tse 400 ka bophirima; ebe o ea ntlheng ea D, limithara tse 200 ka boroa; ebe o qetella ntlheng ea E, limithara tse 700 ka bochabela. Boholo ba sekepe ke bofe? ho baleha?
Tharollo:
Tse tsejoang:
AF = AB – BF = AB – CD = 600 – 200 = 400 m
EF = DE – DF = DE – BC = 700 – 400 = 300 m
Ho eketsa li-vector ho sebelisa likarolo - mathata le litharollo
1. Li-vector tse tharo joalo ka ha ho bontšitsoe setšoantšong se ka tlase.
V1 = 30
V2 = 30
V3 = 40
Sephetho ke sefe likotsi.
Tse tsejoang:
V1 = 30, sekhutlo pakeng tsa V1 le mothapo oa x = 30o
Litšoantšo tsa motsamao o otlolohileng - mathata le litharollo
1. Sebaka sa kerafo (se otlolohileng) khahlanong le nako (se otlolohileng) joalo ka ha ho bontšitsoe setšoantšong se ka tlase. Ntho e phomotseng e bontšitsoe ka nomoro…
Tharollo:
Nomoro ea 3, e bontšitsoeng ka mola o otlolohileng.
Lebelo le tloaelehileng - mathata le litharollo
1. Motho e mong o potoloha khutlonnetsepa e bolelele ba limithara tse 400 le bophara ba limithara tse 100, makhetlo a 12 ka hora e le 'ngoe. lebelo le tloaelehileng le lebelo le tloaelehileng?
Tse tsejoang:
Bolelele ba khutlonnetsepa = limithara tse 400
Bophara ba khutlonnetsepa = limithara tse 100
Selikalikoe sa khutlonnetsepa = (2 x 400 metres) + (2 x 100 metres) = 800 metres + 200 metres = 1000 metres
Sebaka = 12 x 1000 metres = 12,000 metres = 12 km
27 Motsamao oa projectile - mathata le litharollo 1. Kulo e thunngoa ka sekhutlo θ = 60o ka lebelo la 20 m/s. Ho potlaka ka lebaka la matla a khoheli ke 10 m/s2. Nako ea ho fihla bophahamong bo phahameng ke efe? Tse tsejoang: Lebelo la pele la kulo (vo) = 20 m/s Angle (θ) = 60oC … Bala haholoanyane
Molao-motheo oa batho ba batšo - mathata le litharollo
1. Metsi a digrama tse 200 mochesong wa 30°C a kopantswe le metsi a digrama tse 100 mochesong wa 90°C. mocheso o itseng ea metsi = 1 cal.gram-1° C-1Fumana mocheso oa ho qetela oa motsoako!
Tse tsejoang:
Boholo ea metsi 2 (m1) = digrama tse 200
Mocheso oa metsi 1 (T)1= 30oC
Boima ba metsi 2 (m2) = digrama tse 100
10 Dynamics Ntho e hokahaneng ka thapo hodima pulley Mochini wa Atwood – Mathata le Ditharollo
1. Boloko A e nang le boima ea 5 kg, e behiloe sebakeng se boreleli se bataletseng. Boloko B bo nang le boima ba 3 kg bo leketlileng pheletsong e 'ngoe ea thapo bo hokahantsoeng le boloko A holim'a pulley. Ho potlakisa ka baka la matla a khoheli ke 10 m/s2. Ke eng ho potlaka ea liboloko ka bobeli?
Tse tsejoang:
Boima ba boloko A (mA) = 5 kg
Boima ba boloko B (mB) = 3 kg
Ho potlaka ka lebaka la matla a khoheli (g) = 10 m/s2
Motsamao o chitja - mathata le litharollo
1. Ntho e boima ba 10 kg e tsamaya ka sedikadikwe ka lebelo le sa fetoheng la 4 m/s. Haeba radius ya sedikadikwe e le 0.5 metres, jwale:
1) Maqhubu a di-circle ke 4/π Hz
2) The ho potlaka ha bohareng ke 32 ms-2
3) The matla a bohareng ke 320 N
4) Nako ke 4π s.
Ke lipolelo life tsa 'nete?