3 Dinamika test 1-6 mavzu 1

33. 84 kg massali kishi FIK 60% bo‘lgan qo‘zg‘aluvchan blok yordamida eng ko‘pi bilan qancha yukni (kg) ko‘tara oladi?
A) 100 B) 101 C) 168 D) 84
34. Bikrligi k-bo‘lgan prujina x-masofaga siqilgan holda m-massali brusokni devorga vertikal yopishtirib turibdi. Brusok tushib ketmasligi uchun eng ko‘pi bilan massasi qanday bo‘lishi kerak? Devor bilan brusok orasi­dagi ishqalanish koeffitsienti -ga teng deb oling.
A) m=kx / g B) m = kx/  g
C) m = g /  k x D) m =  g / k x

№	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
	C	D	A	B	D	B	D	A	D	C	B	D	A	C	B	D	B	D
№	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36
	A	C	C	D	D	B	D	A	A	C	A	A	C	D	B	A	D	C

35 Massalari 5 va 3 kg bo‘lgan jismlar qo‘zg‘almas blokka osilgan. Blokning radiusi 2 sm bo‘lsa, 12 s dan keyin uning aylanish chastotasi qancha bo‘lishini toping (Gs). =3 deb oling.
A) 144 B) 125 C) 260 D) 250
36. 540 km/soat tezlik bilan uchib ketayotgan samolyot vertikal tekislikda “Nesterov halqasi” nomli figura yasaydi. Xalqa radiusi 750 m. Uchuvchi halqaning eng past nuqtasida necha marta yuklanish sezadi?
A) 2 B) 3 C) 4 D) 6


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