MEXANIKA
I bob.
KinemaiiKa asoslari
I . Ilgarilanm a harakat. M od d iy nuqta.
S an oq sistem a si. Y o ‘l va k o ‘chish
1. 1 - ra sm d a ishlayotgan k o ‘ta rish k rani b ir n e c h a va-
ziy atin in g su ra ti k o ‘rsatilgan. S trelan in g h arak ati ilgarilanm a
h arak at boM adimi? Y ukning h a ra k a ti-c h i?
2. «T o m o sh a charxpalagi» a ttra k sio n in in g qaysi e le m e n t-
lari ilg arilan m a h ara k a tla n a d i (2 - rasm )?
3. a) Y e rd an Q u y o sh g ac h a m asofani;
b ) Y e rn in g Q u y o sh atro fid a g i o rb ita si b o ‘ylab b ir oy
d av o m id a o ‘tg an y o ‘lini;
d ) e k v a to r u zu n lig in i;
e) Y ern in g o ‘z o ‘qi atro fid a sutk alik ay lan ish id a ek v a to r
n u q ta sin in g h a ra k a t tezligini;
0 Y e rn in g Q u y o sh atro fid a g i o rb ita si b o ‘ylab h a ra k a t
tezligini hiso b lash d a Y erni m o d d iy n u q ta d eb q arash m u m -
kinm i?
4 . Q u y id a k o ‘rsatilgan h o lla m in g qaysi b irid a o ‘rg an i-
layotgan jism n i m o d d iy n u q ta d e b q arash m um k in :
a) tra k to m in g tu p ro q q a b o sim in i h isoblashda;
b) ra k etan in g k o ‘tarilish b alan d lig in i an iq lash d a ;
d) m assasi m a ’lu m b o ‘lgan q a v a tla ra ro y o p m a p lita n i
g o rizo n ta l h o la td a b erilgan b alan d lik k a k o ‘ta rish d a bajarilgan
ishni hisoblashda;
e ) o ‘lc h a g ic h s il in d r ( m e n z u r k a ) y o r d a m id a p o ‘la t
sh a rc h a n in g h ajm in i an iq lash d a ?
5. M ak tab futbol m ay d o n in in g rejasi 3- ra sm d a tasv ir-
la n g a n . О, В, C, D b u r c h a k la r d a g i b a y r o q c h a la r n in g ,
E t o ‘p n in g , K, L, M to m o s h a b in la rn in g k o o rd in a ta la rin i
top in g .
6. S in f xonasini san o q sistem asiga b o g 1 lab, X o ‘q n i pol
b ilan do sk a osilgan d ev o rn in g kesishish c h iz ig ‘iga, Y o 'q n i
4
1- rasm .
2 - rasm .
p o l b ilan a w a lg i devorga q o ‘shni b o ‘lg an d ev o rn in g kesishish
c h izig ‘iga, Z o ‘qn i esa yuqo rid a aytilgan ikki dev o rn in g o ‘zaro
k e sish ish c h iz ig ‘iga jo y la s h tir ib , d o s k a n in g p a stk i c h a p
b u rc h a g in in g va o ‘zin g iz o ‘tirg a n p a rta n in g yuqo rig i o ‘ng
b u rc h a g in in g k o o rd in a ta la rin i toping.
7. H a ra k a t tray ek to riy alari 4 - ra sm d a k o ‘rsatilgan v erto -
ly o tn in g h a m d a av to m o b iln in g o ‘tg an y o ‘llarini va k o ‘c h ish -
larin i taq q o slan g .
8. T ak sid a biz n im ag a pul to ‘laym iz: y o ‘lgam i yoki k o ‘-
ch ish g am i? S a m o ly o td a -c h i?
9. K optok 3 m b alan d lik d an polga tushdi va p o ld an qaytib
k o ‘ta rila y o tg a n d a 1 m b a la n d lik d a tu tib olin d i. K o p to k n in g
y o ‘li va k o ‘c h ish in i toping.
Қ m
3 - rasm .
4 - rasm .
5
У, m
10
8
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