7-sinf 8-Mashq.
1.
Velosiped g‘ildiragi bir minutda 120 marta aylanadi, aylanish davri va
chastotasini toping.
______________
Aylanish davri;
Aylanish
davriga teskari kattalik,
aylanish chastotasi deyiladi;
2.
Soatning minut mili aylanish davri sekund
mili aylanish davridan
necha marta farq qiladi?
______________
Aylanish davri;
(1)-formulani minut va sekund mili
bo’yicha yozamiz;
va
(2)-va (3)-ifodalarni o’zaro bo’lib,
nisbat olamiz.
3.
Charxpalak 10 minutda 20
marta aylanadi,
uning aylanish davrini
toping.
______________
Charxpalakning
aylanish davri;
4.
Minutiga 1200 marta aylanayotgan
motor valining aylanish
chastotasi qanday?
______________
Motorning aylanish chastotasi;
5.
Yerning o‘z o‘qi atrofida aylanish davri 24 soatga teng. U 144 soatda
o‘z o‘qi atrofida necha marta aylanadi?
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