1. Shay gariiraya oo leh soo noqnoqosho 5 Hz ah una gudbaya midig iyo bidix. Shaygu wuxuu ka dhaqaaqaa barta dheelitirka ilaa ugu badnaan. barakac dhanka midig. Go'aami muddada loo baahan yahay si loo gaaro kala-guurka ugu badan ee dhanka midig ilaa kow iyo toban jeer.
A. 2.05
B. 2.20
C. 2.25
D. 2.50
La yaqaan:
Soo noqnoqoshada (f) = xaddiga gariirka 1 ilbiriqsi = 5 Hz
Xili (T) = waqti go'an si loo sameeyo hal gariir = 1/f = 1/5 = 0.2 ilbiriqsi
SE buska: Muddada loo baahan yahay si loo gaaro qulqulka ugu badan ee midig ilaa kow iyo toban jeer
Xalka:
Qaabka gariirka shayga:
(1 gariir): B → C → B → A → B
Hal gariir, shaygu wuxuu sameeyaa afar gariir oo kala ah B ilaa C, C ilaa B, B ilaa A, A ilaa B. Muddada loo baahan yahay hal gariir waa 0.2 ilbiriqsi / 4 = 0.05 ilbiriqsi.
Muddada loo baahan yahay si loo gaaro qulqulka ugu badan ee midig ilaa kow iyo toban jeer = (10 x 0.2 ilbiriqsi) + 0.05 ilbiriqsi = 2 ilbiriqsi + 0.05 ilbiriqsi = 2.05 ilbiriqsi.
Jawaabta saxda ah waa A.
2. Gu' ayaa lagu laalaadaa shay oo gariira. Si soo noqnoqoshada gariirku u labanlaabto soo noqnoqoshada gariirka asalka ah, markaa cufka shayga ayaa loo beddelaa…
A. labanlaab culeyska culayskii asalka ahaa
B. afar jibaar culeyska rarka asalka ah
C. kala bar wakhtiga cufka culayska
D. rubuc ka mid ah cufnaanta rarka asalka ah
Xalka:
Isle'egta soo noqnoqoshada gariirka gu'ga:
f = soo noqnoqoshada, k = joogto, m = cufka walaxda
Soo noqnoqoshada gariirka gu'ga haddii k = 1 jeer, m = 1 jeer:
Si loo helo soo noqnoqoshada (f) gariirka guga oo labanlaabma cufka (m) waxaa loo beddelaa 0.25 jeer ama 1/4 jeer:
Jawaabta saxda ah waa D.
3. Gu' leh k joogto ah = 1000 N/m ayaa lagu laalaadaa shay miisaankiisu yahay 400 garaam. Shayga waxaa loo jiidayaa dhanka midig ilaa 5 cm, ka dibna waa la sii daayaa, si shaygu u noqdo iswaafajin fudud oo oscillating ahGo'aami baaxadda iyo soo noqnoqoshada gariirka shayga.
La yaqaan:
Joogtada guga (k) = 1000 N/m
Mass ee shayga (m) = 400 garaam = 0.4 kg
Ballaca (Δx) = 5 cm = 0.05 m
La doonayo: Ballaca iyo soo noqnoqoshada isbeddelka
Xalka:
Ballaca wareegga guga = Δx = 5 cm.
Soo noqnoqoshada isbeddelka:
Jawaabta saxda ah waa B.
