M. Usmanov fizikadan savol va masalalar to’plami
Diametri m 2 bo‘lgan aylananing uzunligini toping ). (m 10
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9. Diametri m 2 bo‘lgan aylananing uzunligini toping ). (m 10. Diametri dm 16 bo‘lgan aylananing uzunligini toping ). (sm 14 ,
= π
11. Uzunligi sm 12 , 25 bo‘lgan aylananing radiusini toping ). (sm 12. Uzunligi sm 68 , 37 bo‘lgan aylananing radiusini toping ). (dm 13. Uzunligi sm 36 , 75 bo‘lgan aylananing diametrini toping ). (m 14. Uzunligi m 57 , 1 bo‘lgan aylananing diametrini toping ). (sm 14 , 3 = π
15. Quyidagi burchaklarning radian o‘lchovini toping: 1) 0
2) 0 45 3) 0 72 4) 0 90 5) 0 135 6) 0 210 7) 0 270 8) 0 360 16. Quyidagi burchaklarning gradus o‘lchovini toping: 1) 12
2) 3 π 3) 4 π 4) 5 π 5) 2 3 π 6)
4 7 π 7) π 8) π 2
17. s 20 da 10 marta aylanayotgan diskning aylanish davrini toping ). (
18. min
4 da 20 marta aylanayotgan diskning aylanish davrini toping ). (
19.
2 da 120 marta aylanayotgan diskning aylanish davrini toping ). (
20. Aylanish davri s 15 bo‘lgan disk 3 minutda necha marta aylanadi? 21. Aylanish davri s 40 bo‘lgan disk 0,4 soatda necha marta aylanadi? 22. Aylanish davri 20 s bo‘lgan disk 60 marta aylanishi uchun qancha vaqt kerak (min)?
Aylanish davri 18 s bo‘lgan disk 50 marta aylanishi uchun qancha vaqt kerak (min)?
Yerning o‘z o‘qi atrofida aylanish davri 24 saotga teng. U 120 soatda o‘z o‘qi atrofida necha marta aylanadi?
Yer quyosh atrofida 1461 sutkada 4 marta aylanadi. Yerning quyosh atrofida aylanish davrini toping (sutka).
Avtomobilning baloni 1 minutda 1200 marta aylansa, uning aylanish chastotasi nimaga teng ) / 1 (
27. Disk 20 s da 400 marta aylanadi. Uning aylanish chastotasini toping ) /
( s 28
Diskning aylanish chastotasi 2100 ayl/min. Bu chastotani ) / 1 (
ifodalang.
Diskning aylanish chastotasi 3660 ayl/min. Bu chastotani ) /
( s da ifodalang. 30. Diskning aylanish chastotasi 14400 ayl/soat. Bu chastotani ) /
( s da ifodalang. 31. Avtomobil g‘ildiragining aylanish chastotasi 1 30
s ga teng. U 900 marta aylanishi uchun qancha vaqt kerak ). ( s 32. Avtomobil g‘ildiragining aylanish chastotasi 1 20
s ga teng. U 1200 marta aylanishi uchun qancha vaqt kerak (min).
Diskning aylanish chastotasi 1 5
s . U
s 20 da necha marta aylanadi? 34. Diskning aylanish chastotasi 1 4
s . U 0,4 minutda necha marta aylanadi? 35. Diskning aylanish chastotasi 7200 ayl/min. U 6 sekundda necha marta aylanadi?
3 da
rad 12 ga burilgan diskning burchak tezligini toping ( s rad / ). 37.
5 da
rad 4 ga burilgan diskning burchak tezligini toping ( s rad / ). 38. Burchak tezligi s rad / 2 bo‘lgan disk s 4 da qanday burchakka buriladi ? ) ( rad
Burchak tezligi
6 bo‘lgan disk s 4 , 0 da qanday burchakka buriladi ? )
rad
Burchak tezligi
5 , 1 bo‘lgan disk rad 6 ga burilishi uchun qancha vaqt kerak (s)? 41. Burchak tezligi s rad / 5 , 0 bo‘lgan disk rad 4 ga burilishi uchun qancha vaqt kerak (s)? 42. Disk
s 63 , 0 da
0 72 burchakka burildi. Uning burchak tezligini toping ( s rad / ). 14 , 3 = π
43. Disk
s 19625
, 0 da 0 90 burchakka burildi. Uning burchak tezligini toping (
, 3 = π
44. Disk
s 942
, 0 da 0 270
burchakka burildi. Uning burchak tezligini toping (
rad / ). 14 , 3 = π
45. Aylanish davri s 4 bo‘lgan diakning burchak tezligini toping ( s rad / ). 46. Aylanish davri s 785
, 0 bo‘lgan diakning burchak tezligini toping ( s rad / ). 14 , 3 = π 47. Burchak tezligi s rad / 2 , 0 bo‘lgan diskning aylanish davrini toping (s)? 48. Burchak tezligi s rad / 314
, 0 bo‘lgan diskning aylanish davrini toping (s)? 29
Chastotasi 1 3 − s bo‘lgan g‘ildirakining burchak tezligini toping ( s rad / ). 50. Chastotasi 1 10
s bo‘lgan g‘ildirakining burchak tezligini toping ( s rad / ). 51. Chastotasi min /
bo‘lgan g‘ildirakining burchak tezligini toping (
rad / ). 14 , 3 = π 52. Burchak tezligi s rad / 7 , 15 bo‘lgan charxning aylanish chastotasini toping ) /
( s . 53. Burchak tezligi s rad / 512
, 2 bo‘lgan charxning aylanish chastotasini toping ) / 1 ( s . 54. Diskning radiusi sm 30 va aylanish davri s 57 , 1 bo‘lsa, disk chekka nuqtasining chiziqli tezligini toping ). / ( s m 14 , 3 = π 55. Diskning radiusi dm 10 va aylanish davri s 785
, 0 bo‘lsa, disk chekka nuqtasining chiziqli tezligini toping ). / ( s m
Diskning diametri dm 4 s 314
, 0 bo‘lsa, disk chekka nuqtasining chiziqli tezligini toping ). / ( s m
Charxning radiusi
40 va chekka nuqtasining chiziqli tezligi s m / 7 , 15 bo‘lsa, charx aylanish davrini toping ). (
58. Charxning radiusi m 3 va chekka nuqtasining chiziqli tezligi s m / 28 , 6 bo‘lsa, charx aylanish davrini toping ). (
14 , 3 = π
59. Joyida aylanayotgan g‘ildirak chekka nuqtasining chiziqli tezligi s m / 768
, 3 va aylanish davri s 5 . G‘ildirak radiusini toping ) (
60. Joyida aylanayotgan g‘ildirak chekka nuqtasining chiziqli tezligi s m / 471
, 0 va aylanish davri s 3 . G‘ildirak radiusini toping ) (
61. G‘ildirakning radiusi sm 20 va aylanish chastotasi 1 2 − s ga teng. G‘ildirak chekka nuqtasining chiziqli tezligini toping ). / ( s m 14 , 3 = π 62. Diskning radiusi sm 40 va aylanish chastotasi 1 8 − s ga teng. Disk chekka nuqtasining chiziqli tezligini toping ). / ( s m 14 , 3 = π 63. Diskning diametri dm 16 va aylanish chastotasi 1 5 , 0 −
ga teng. Disk chekka nuqtasining chiziqli tezligini toping ). /
s m 14 , 3 = π 64. Charxning radiusi m 5 , 0 va chekka nuqtasining chiziqli tezligi s m / 42 , 9 bo‘lsa, charx aylanish chastotasini toping ). /
( s 14 , 3 = π 65. Charxning radiusi sm 32 va chekka nuqtasining chiziqli tezligi s m / 192
, 40 bo‘lsa, charx aylanish chastotasini toping ). / 1 ( s 14 , 3 = π 66. Diskning radiusi sm 35 va chekka nuqtasining chiziqli tezligi s m / 98 , 21 bo‘lsa, disk aylanish chastotasini toping ). /
( s 14 , 3 = π 30
G‘ildiarkning aylanish chastotasi 1 12 − s va chekka nuqtasining chiziqli tezligi
608
, 22 bo‘lsa, g‘ildirak radiusini toping ). (
14 ,
= π
68. G‘ildiarkning aylanish chastotasi 1 15
s va chekka nuqtasining chiziqli tezligi
13 , 14 bo‘lsa, g‘ildirak radiusini toping ). (
14 , 3 = π
69. Radiusi m 2 , 0 bo‘lgan charxning burchak tezligi s rad / 6 ga teng. Charx chekka nuqtasining chiziqli tezligini toping ). / ( s m
Radiusi
30 bo‘lgan diskning burchak tezligi s rad / 4 ga teng. Disk chekka nuqtasining chiziqli tezligini toping ). / ( s m
Burchak tezligi
8 bo‘lgan maxovik chekka nuqtasining chiziqli tezligi s m / 2 , 3 ga teng. Maxovikning radiusini toping ) (
72. Burchak tezligi s rad / 4 bo‘lgan maxovik chekka nuqtasining chiziqli tezligi s m / 2 ga teng. Maxovikning radiusini toping ) (
73. Radiusi dm 1 bo‘lgan charx chekka nuqtasining chiziqli tezligi s m / 2 ga teng. Charxning burchak tezligini toping ). / ( s rad
Radiusi
20 bo‘lgan charx chekka nuqtasining chiziqli tezligi s m / 1 , 0
ga teng. Charxning burchak tezligini toping ). / ( s rad
Radiusi
40 bo‘lgan disk chekka nuqtasining chiziqli tezligi s m / 2 ga teng. Bu nuqtaning markazga untilma tezlanishini toping ) / ( 2
m .
Avtomobil radiusi
40 bo‘lgan burilishda soat km / 72 tezlik bilan harakatlanmoqda. Uning markazga untilma tezlanishini toping ) / ( 2
m .
Mototsikl radiusi
50 bo‘lgan burilishda soat km / 90 tezlik bilan harakatlanmoqda. Uning normal tezlanishini toping ) / ( 2
m .
Diskning radiusi m 3 va chekka nuqtasining normal tezlanishi 2 / 27 s m ga
teng. Disk chekka nuqtasining chiziqli tezligini toping ( s m / ). 79. Charxning radiusi m 5 va chekka nuqtasining normal tezlanishi 2 / 05 , 0
m ga teng. Charx chekka nuqtasining chiziqli tezligini toping ( s m / ). 80. Diskning diametri m 40 va chekka nuqtasining normal tezlanishi 2 / 05 , 0
m ga teng. Disk chekka nuqtasining chiziqli tezligini toping ( s m / ). 81. G‘ildirak chekka nuqtasining chiziqli tezligi s m / 10 va markazga intilma tezlanishi 2 / 5 s m ga teng. G‘ildirakning radiusini toping ). (
82. Avtomobilning burilishdagi chiziqli tezligi soat km / 54 va normal tezlanishi 2 / 5 , 2 s m ga teng. Burilish radiusini toping ). (
31
Radiusi
20 bo‘lgan diskning burchak tezligi s rad / 5 ga teng. Disk chekka nuqtasining normal tezlanishini toping 2 / ( s m ).
84. Diametri sm 20 bo‘lgan shkivning burchak tezligi s rad / 4 ga teng. Shkiv chekka nuqtasining normal tezlanishini toping 2 / ( s m )
s rad / 2 burchak tezlik bilan aylanayotgan shkiv chekka nuqtasining normal tezlanishini 2 / 8 , 0 s m ga teng. Shkiv radiusini toping ). (
86. s rad / 4 burchak tezlik bilan aylanayotgan shkiv chekka nuqtasining normal tezlanishini 2 / 8 , 4 s m ga teng. Shkiv radiusini toping ). (
87. Radiusi sm 5 bo‘lgan disk chekka nuqtasining normal tezlanishini 2 / 8 , 0
m ga teng. Diskning burchak tezligini toping ). /
s rad
Diametri dm 4 bo‘lgan disk chekka nuqtasining normal tezlanishini 2 / 20 s m ga teng. Diskning burchak tezligini toping ). /
s rad
Burchak tezligi
4 va chekka nuqtasining chiziqli tezligi s m / 5
bo‘lgan disk chekka nuqtasining normal tezlanishini toping 2 / ( s m ).
90. Burchak tezligi s rad / 2 va chekka nuqtasining normal tezlanishi 2 / 6 s m
bo‘lgan disk chekka nuqtasining chiziqli tezligini toping s m / ( ). 91. Chekka nuqtasining chiziqli tezligi s m / 1 va normal tezlanishi 2 / 4 s m
bo‘lgan maxovik burchak tezligini toping ) / ( s rad .
Aylansish davri s 4 va radiusi sm 12 bo‘lgan disk chekka nuqtasining normal tezlanishini toping 2 / ( s m . 14 , 3 = π
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