4045

Определение положения центра тяжести и момента инерции физического маятника

Лабораторная работа

Физика

Определение положения центра тяжести и момента инерции физического маятника. Цель работы Целью данной работы являются: определение ускорения свободного падения при помощи математического маятника определение положения центра тяжес...

Русский

2012-11-12

47.5 KB

5 чел.

Определение положения центра тяжести и момента инерции физического маятника.

  1.  Цель работы

Целью данной работы являются:

  1.  определение ускорения свободного падения при помощи математического маятника;
  2.  определение положения центра тяжести и момента инерции физического маятника.
  3.  Рисунок

5

3

2

1

4

2’

  1.  Рабочие формулы

 

  1.  Константы косвенных измерений

m=(8.200,05)кг

L=(0.740.5)м


  1.  Таблицы измерений

τ1,c

Θ1,c

τ2,c

Θ2,c

g,

1

2

3

τср.

1

2

3

τср

28.27

28.07

28.01

28.12

1.41

25.14

25.38

25.36

25.29

1.26

9.85

τ1,c

T1,c

τ2,c

T2,c

l1,м

I,кг*м2

1

2

3

τср.

1

2

3

τср

32.64

32.88

32.71

32.74

1.64

32.80

33.20

32.70

32.90

1.65

0.27

1.48

  1.  Пример расчета измеряемой величины

  1.  Пример расчета полной абсолютной погрешности прямых измерений для одной из измеряемых величин.


  1.  Расчет погрешностей (относительной и абсолютной) косвенных измерений

  1.  Окончательный ответ.

g=(9,85±0,69)м/с2 a=0,7 dg=7%


L

C

1

12

1- цилиндрический  стержень

2,2’- опорные призмы

3- подвижный груз

4- неподвижный груз

5- шкала

С- центр тяжести


 

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