Xo’jaobod tuman umumta’lim

Novning qiyalik holati	s, m	t 1 ,s	t 2,,s	t 3 ,s	a 1,m/s^2	a 2,m/s^2	a 3,m/s^2	a,m/s^2	ao‘rt,m/s^2
ε, %
namuna	1.63	6	5	7	0.09	0.13	0.08	0.10	0,10
1
2
3

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Baho:_______
SANA____________
2-Laboratoriya ishi.
PRUJINA BIKIRLIGINI ANIQLASH.


Ishning maqsadi: eng oddiy dinamometr prujinasining bikirligini aniqlash orqali jismlarning deformatsiyasi va bikirligi haqida tasavvurlarni kengaytirish, elastiklik kuchi haqida olingan nazariy bilimlarni mustahkamlash.
Kerakli jihozlar: shtativ, eng oddiy dinamometr, yuklar to‘plami, millimetrli qog‘oz.
Ishni bajarish tartibi

1. 
   P rujinadan dinamometr yasash uchun shkalasiga millimetrli qog‘oz
   

yopishtiring.
2. Dinamometrni shtativga 87-rasmda ko‘rsatilganidek mahkamlang.
3. Dinamometr ko‘rsatkichining boshlang‘ich vaziyatini shkaladagi
millimetrli qog‘ozga belgilang.
4. Dinamometr ilgagiga m₁ massali yukni iling, uning ta’sirida
Prujinaning Δl₁ uzayishini o‘lchang va natijani jadvalga yozing.
5. Massalari m₂ va m₃ bo‘lgan yuk uchun ham prujinaning Δl₂, Δl₃
cho‘zilishlarini o‘lchang va natijalarni jadvalga yozing.
6. Dinamometrga osilgan har bir yuk uchun prujinaga ta’sir etgan tashqi
kuchlarni F_t = mg formula bo‘yicha hisoblang va natijalarni jadvalga
yozing (g = 10 m/s² deb oling).
7. Har bir o‘lchangan Δl₁, Δl₂, Δl₃ va hisoblangan F_t1, F_t2, F_t3 natijalarni
k = F_t /Δl formulaga qo‘yib, k₁, k₂, k₃ prujinalar bikirligini hisoblang va
natijalarni jadvalga yozing.
8. k_o‘rt= ( k₁+ k₂+ k₃)/3 formula bo‘yicha prujina bikirligining o‘rtacha qiymatini hisoblang
va natijani 2-jadvalga yozing.

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