fisiks

2 Molao-motheo oa matla a mosebetsi Matla a sa bolokeheng Motsamao sefofaneng se sekametseng se nang le khohlano - Mathata le Litharollo

1. Boloko bo thella tlase sefofaneng se sekametseng ka khohlano. Lebelo la boloko ke lefe ha boloko bo otla fatshe? Coefficient ya khohlano ya kinetic ke 0.4. Ho potlaka ka lebaka la matla a khoheli ke 10 m/s ².

Tse tsejoang:

Bolelele ba qalong (h)_o) = 6 m

Bolelele ba ho qetela (h _t ) = 0 m

Lebelo la pele (vo _o ) = 0 (boloko qalong ha motho a phomotse)

Koefficient ea kinetic friction (μ _k ) = 0.4

Bala haholoanyane

Mosebetsi o entsoeng lits'ebetsong tsa thermodynamic - mathata le litharollo

1. Khase e loketseng e hatelloa ho tloha boemong ba 1 ho ea boemong ba 2 joalo ka ha ho bontšitsoe kerafong e ka tlase. Fumana mosebetsi o etsoang ke khase.

tharollo

Litara e le 1 = 0.001 m ³

Tse tsejoang:

Khatello 1 (P ₁ ) = 10 kPa = 10,000 Pa = 10,000 N/m ²

Khatello 2 (P ₂ ) = 20 kPa = 20,000 Pa = 20,000 N/m ²

Bala haholoanyane

Ho thulana le paballo ea matla a mechini - li-probe le litharollo

1. Lintho tse peli li na le boima bo lekanang , m ₁ = m ₂ = 0.5 kg e theohile ho tloha bophahamong bo tšoanang joalo ka ha ho bontšitsoe setšoantšong se ka tlase. Radius ea selikalikoe ke 1/5 m. Ho thulana pakeng tsa lintho ka bobeli ho tenyetseha ka ho phethahetseng. Fumana lebelo la ntho ka 'ngoe kamora ho thulana. Ho potlaka ka lebaka la matla a khoheli ke 10 m/s ².

Tse tsejoang:

Boima ba ntho (m) = m₁ = m₂ = 0.5 kg

Bolelele ba pele (h ₁ ) = 1/5 m

Bolelele ba ho qetela (h ₂ ) = 0 ( botlaase ba tsela )

Bala haholoanyane

Motsamao oa Momentum Impulse le Projectile - Mathata le Litharollo

1. Bolo ea 0.2-kg e tla kenngoa ka har'a lesoba la C, joalo ka ha ho bontšitsoe setšoantšong se ka tlase. Motho ea otlang bolo o otla ka motsotsoana oa 0.01 'me tsela ea BC e tsamaile ka motsotsoana o le mong. Fumana boholo ba matla e le hore bolo e ka kenngoa ka har'a lesoba la C. Ho potlaka ka lebaka la matla a khoheli ke 10 m/s ².

Tse tsejoang:

Sekhutlo (θ) = 60 ^o

Boima ba bolo (m) = 0.2 kg

Ho potlaka ka lebaka la matla a khoheli (g) = 10 m/s ²

Nako ea ho arohana (Δt) = metsotsoana e 0.01

Bala haholoanyane

Motsamao o sa lekanang oa mola o otlolohileng - mathata le litharollo

1.

Tafole e kaholimo e bonts'a lintlha tsa lintho tse tharo tse tsamaeang sebaka se le seng ka ho potlaka ho sa khaotseng.

Lebelo la ho qetela la ntho P le lebelo la pele la ntho Q ke lefe?

Bala haholoanyane

Khopolo-taba ea Kinetic ea likhase le molao oa pele oa thermodynamics - mathata le litharollo

1. Dikhase tse loketseng di ka hara setshelo se nang le bophahamo ba dilithara tse 4 mme kgatello ya sona ke 3 atm (1 atm = 10 ⁵ Nm ^-2 ). Dikhase tse loketseng di futhumatswa ka kgatello e sa fetoheng ho tloha ho 27 ^o C ho isa ho 87 ^o C. Bokgoni ba mocheso ba kgase ke 9 JK ^-1 . Bophahamo ba ho qetela ba dikhase le phetoho ya matla a ka hare a dikhase ke bofe?

tharollo

Ts'ebetso ea Isobaric (khatello e sa khaotseng)

Tse tsejoang:

Bophahamo ba pele ba khase (V ₁ ) = lilithara tse 4

Bala haholoanyane

Ho potoloha ha 'mele e tiileng - mathata le litharollo

Motsotso oa matla

1. Matla a mararo a sebetsa hodima lehlaseli le bolelele ba limithara tse 6, joalo ka ha ho bontšitsoe setšoantšong se ka tlase. Torque ea net e potolohang lehlaseli ho potoloha ntlha ea O e le axis ea potoloho ke eng?

Tse tsejoang:

Mothapo oa potoloho ntlheng ea O.

Matla a 1 (F ₁ ) = F

Sebaka se pakeng tsa mola oa ketso oa F ₁ le axis ea potoloho (r ₁ ) = limithara tse 3

Bala haholoanyane

Li-spring tse latellanang le tse bapileng - mathata le litharollo

1. Ntho ea boima ba ligrama tse 160 e khomareloa pheletsong e 'ngoe ea selemo 'me phetoho ea bolelele ba selemo ke 4 cm. Phetoho ea bolelele ba liliba tse tharo tse hokahaneng ka tatellano le ka ho lekana ke efe , joalo ka ha ho bontšitsoe setšoantšong se ka tlase?

Tse tsejoang:

Phetoho ea bolelele ba selemo (Δx) = 4 cm = 0.04 m

Boima (m) = digrama tse 160 = 0.16 kg

Ho potlaka ka lebaka la matla a khoheli (g) = 10 m/s ²

Bala haholoanyane

Matla a metsamao ea potoloho - mathata le litharollo

1. Pulley e nang le motsotso oa inertia I = 2/5 MR ² e na le boima ba 2-kg. Haeba motsotso oa matla holim'a pulley e le 4 Nm joale lebelo le otlolohileng la pulley ke lefe. Ho potlaka ka lebaka la matla a khoheli ke g = 10 ms ^-2.

Tsejoa :

Motsotso oa ho se sebetse ha pulley (I) = 2/5 MR ²

Boima ba pulley (M) = 2 kg

Motsotso oa matla (τ) = 4 Nm

Bala haholoanyane

Matla a likaroloana - mathata le litharollo

1. Ntho A e nang le boima ba 6-kg le ntho B e nang le boima ba 4-kg e hokahantsweng ka thapo mme e hulwa ke matla a F = 60 N, jwalo ka ha ho bontshitswe setshwantshong se ka tlase. Coefficient ya kinetic friction pakeng tsa fatshe le dintho ka bobedi ke 0.5 (tan θ = ¾). Ho potlaka ka lebaka la matla a kgoheli ke 10 m/s ² . Boholo ba matla a kgatello ke bofe?

Tse tsejoang:

Boima ba ntho A (m_A) = 6 kg

Boima ba ntho B (m _B ) = 4 kg

Matla (F) = 60 Newton

Bala haholoanyane