Sehlooho sa teko: Teko ea Melde
Sepheo sa teko: Ho batlisisa kamano pakeng tsa kgatello ya thapo, bolelele ba maqhubu le lebelo la ho ata ha maqhubu.
Lisebelisoa le thepa: Sesupa-nako sa ticker, thapo, pulley, boima ba digrama tse 50, phepelo ya motlakase, sekala, rula.
Khopolo-taba ea motheo:
Lebelo la ho ata ha maqhubu le hlalosoa ke equation:
v = λ f
Lintlha :
v = lebelo la ho ata ha maqhubu
λ = bolelele ba leqhubu
f = makhetlo
Maqhubu a jalang hodima dithapo kapa dithapo ke maqhubu a potolohang . Lebelo la maqhubu a potolohang hodima thapo le ka balwa ho sebediswa foromo:
Lintlha :
v = lebelo la maqhubu thapong (limithara/motsotsoana)
F = T = matla a tsitsipano ea thapo (Newton)
μ = boima ka yuniti bolelele ba thapo (kilograma/mithara)
Mehato ea Liteko:
1. Lekanya boima ba thapo o sebedisa sekala
Boima ba thapo = …….gram = …….kg
2. Lekanya bolelele ba thapo o sebedisa rulara.
Bolelele ba thapo (l) =……….cm = …….m
3. Bala boima ba thapo
μ = m / l = …….kg/m
Kenya tafoleng ea data, kholomo ea thapo ea khoele, mola oa pele.
4. Kopanya disebediswa tsa teko jwalo ka ha ho bontshitswe setshwantshong. Qetello e nngwe ya thapo e hokahantswe le mojaro wa digrama tse 50.
5. Lekanya bolelele ba thapo ho tloha pheletsong e 'ngoe e tlamiloeng ho ea pheletsong e 'ngoe e tlamiloeng.
Bolelele ba thapo (l) = …….cm = …….m
6. Bulela ticker timer ho fihlela leqhubu le emeng le hlaha khoeleng. Bala palo ea maqhubu a khahlanong le maqhubu. Palo ea maqhubu a khahlanong le maqhubu = …………
A re re ho na le mala a n, ebe sebaka se pakeng tsa mpa e le 'ngoe = bolelele ba thapo (l) / n = x
Sebaka 1 mpa (x) = 1/2 bolelele ba leqhubu (1/2 λ)
Bolelele ba leqhubu bo le 1 (λ) = 2 x =……….. m
Kenya tafoleng ea data, kholomo ea bolelele ba bolelele, mola oa pele.
7. Maqhubu a maqhubu = ticker timer thothomelo maqhubu = Maqhubu a PLN = 50 Hertz
8. Bala lebelo la ho ata ha maqhubu
v = f λ =………..m/s
Kenya tafoleng ea data, kholomo ea lebelo la maqhubu, mola oa pele.
9. Pheta mohato oa 4, u sebelisa boima ba ligrama tse 100.
Kenya data tafoleng, mola wa bobedi.
10. Pheta mohato oa 4, u sebelisa boima ba ligrama tse 150.
Kenya data tafoleng, mola wa boraro.
Lintlha:
Boima ba mojaro (m) = digrama tse 50 = (50/1000) kg = (5/100) kg = 0,05 kg
Ho potlaka ka lebaka la matla a khoheli (g) = 10 m/s 2
Boima ba moroalo (w) = mg = (0,05 kg)(10 m/s 2 ) = 0,5 kg m/s 2 = 0,5 N
Boima ba mojaro (w) = matla a kgatello thapong (F)
|
Che |
Matla a tsitsipano ea thapo (F) |
Makgetlo (f) |
Bolelele ba maqhubu ( λ) |
Boima ba thapo ( μ) |
Lebelo la ho ata ha maqhubu (v = f λ ) |
|
1 |
0,5 N |
50 Hz |
|||
|
2 |
1,0 N |
50 Hz |
|||
|
3 |
1,5 N |
50 Hz |
Tlhahlobo ea lintlha:
– Kamano ke efe pakeng tsa kgatello e thapong le bolelele ba leqhubu?
– Kamano ke efe pakeng tsa kgatello thapong le lebelo la ho ata ha maqhubu?
– Kamano ke efe pakeng tsa bolelele ba leqhubu le lebelo la leqhubu?
Qetello:
Bolela qeto ea hau.
