Univeristatea Tehnica a Moldovei, Catedra Fizica

la experiena de laborator Nr. 10.9Studiul amortizarii oscilatiilor mecanice

A efectuat studentul grupei:MN-141

Numele i prenumele student(ului/ei):

A verificat profesorul:Musinchi C.

Chisinau 2015

1. Scopul experienei:

Studiul experimental al amortizarii oscilatiilor mecanice si determinarea

coeficientului de amortizare, decrementului logaritmic al amortizarii,

factorolui de calitate a sistemului oscilant, coeficientului de rezistenta

si constantei de elastice a resortului

2. Aparate i accesorii:

Calculator, soft pentru procesarea datelor experimentale, cablu COM,

cronometru electronic, 1 senzor, stativ, mufe, bara scurta, cilindru

cu orificiu axial ce trece in oblic, bulon cu orificiu axial, pendul gravitational,

rigla, carucior, cu obturator si indicator, set de resorturi comprimabile

si extensibile

3. Dependena studiat:

4. Schema experienei:

5. Tabelul msurrilor:

m=0.00600kg;

n, s, s, s, s

10.051100.277200.050900.27700

20.051100.277100.051500.27640

30.051800.276500.052100.27600

40.052100.275800.052200.27650

50.052400.274900.052600.27640

60.052600.274800.052800.27580

70.052800.275000.053000.27530

80.053000.274500.053600.27500

90.053800.273600.053800.27530

100.053800.273300.054000.274900.05420

n

, s, s

10,656450,656450,01361

20,656551,3130,01938

30,656751,969750,02512

40,65642,626150,02893

50,65613,282250,03273

60,65623,938450,03651

70,65654,594950,05149

80,65655,251450,05149

90,65625,907650,0589

13,1152631,063990,566570,006621,76501474,560420,005530,00019

23,4013633,410610,542220,006381,84428492,412230,00570,00115

33,6231935,464740,525360,006191,90347507,526660,004679E-5

45,4347853,368080,428950,005052,33126622,097030,005680,00038

56,1728460,765460,402490,004732,48452664,183930,005410,00027

67,7519476,137340,359170,004232,78423742,692670,005550,00173

79,4339691,623940,325580,003853,07148815,99740,008580,00073

l, m

10,3211,12733

20,2941,08702

30,2761,05507

40,1840,86008

50,1620,80603

60,1290,72008

70,1060,65641

6. Prelucrarea datelor experimentale:

9.63119;

0.0690

0.000066;

0.0710

8.795649;

0.0058701/s;

7. Calculul erorilor:0.044330;

0.004603;

0.006180

0.089565;

0.000020;

0.006300

0.088732;

2.095983;

0.000651/s;

0.110733;

8. Rezultate finale:( 9,630,04 );

0,4%;

( 0.0690,006 )

9%;

( 0.0710,006 )

9%;

( 0,00590,0007 )1/s;

11%.

9. Concluzii:Calculator, soft pentru procesarea datelor experimentale, cablu COM,

cronometru electronic, 1 senzor, stativ, mufe, bara scurta, cilindru

cu orificiu axial ce trece in oblic, bulon cu orificiu axial, pendul gravitational,

rigla, carucior, cu obturator si indicator, set de resorturi comprimabile

si extensibile

10. Graficele dependenelor studiate:

Fig.1

Fig.2

Fig.3

Fig.4

Concluzie:

In urma efectuarii lucrarii de laborator studiat cum se poate determina oscilatiile corpului intr-o anumita perioade de timp si am calculate erorile.Ne-am familizat cu procesul efectuarii laboratorului cu ajutorul calculatorului.

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