Лабораторная работа


Користуючись методом найменших квадратів МНК визначити модуль пружності сталі E модуль Юнга. Дати оцінку похибки визначення модуля Юнга E за методом НК. Дати оцінку E для одного окремо взятого вимірювання вивести формулу середнього квадратичного відхилення модуля Юнга SЕ . Модуль Юнга сталі E = 20  1010 Н м2 .



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  1.  Користуючись теоретичними відомостями, які подані у "Курсі фізики. Практикум" (видання 1992 р., м.Київ, стор.15, формула 20) дослідити характер залежності між швидкістю руху куль V та часом тривалості удару :


2. Користуючись методом найменших квадратів (МНК) визначити модуль       пружності сталі E (модуль Юнга).

 3. Дати оцінку похибки визначення модуля Юнга E за методом НК.

 4. Дати оцінку E для одного окремо взятого вимірювання (вивести формулу середнього квадратичного відхилення модуля Юнга SЕ ).

 5. Порівняти похибки отримані за методом НК та за формулою середнього квадратичного відхилення.


   Радіус куль R = ( 25,5 0,1 ) мм.

   Довжина підвісу l = ( 46 0,1 ) см.


   Густина сталі = 7800 кг/м3.

   Модуль Юнга сталі E = 20 1010 Н / м2 .

   Кут відхилення   змінюється від 14 до 8 (якщо   7, то куля не відстає від електромагніту).


                                                                 Стрілка сегменту:  h  =  l ( 1 - Cos / 2 ).





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