Univeristatea Tehnica a Moldovei, Catedra Fizica

la experiena de laborator Nr. 10.9Studiul amortizarii oscilatiilor mecanice

A efectuat studentul grupei:FAF-141

Numele i prenumele student(ului/ei):Botnari Nicolae

A verificat profesorul:Tronciu Vasile

2015

1. Scopul experienei:

Studiul experimental al amortizarii oscilatiilor mecanice si determinarea

coeficientului de amortizare, decrementului logaritmic al amortizarii,

factorului 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

10.079900.396800.079900.46620

20.080100.396700.080100.46630

30.080600.395200.080900.46670

40.081000.393800.081400.46650

50.081700.393200.081700.46630

60.081800.392800.082200.46610

70.082100.392500.082700.46550

80.082800.392600.082900.46470

90.083300.392200.083700.46390

100.083800.390800.084000.464300.08420

n

, s, s

11,02291,02290,0025

21,023452,046350,00872

31,02363,069950,01367

41,023054,0930,02228

51,022955,115950,0235

61,023056,1390,02716

71,023157,162150,03565

81,023258,18540,04167

91,023359,208750,04766

101,023110,231850,05242

13,4843233,454280,535720,00541,86663581,775930,004580,00023

23,9062538,103610,505960,005061,97642620,867590,004980,00012

32,5839825,210880,622090,006221,60748505,078780,005670,00016

43,1545730,834350,563030,005621,77611559,001780,004130,00024

53,9840638,711230,5010,005021,99601625,814740,004960,00024

64,8543747,218840,453870,004542,20326691,980180,005250,00139

73,86137,720210,508920,005081,96494618,423230,005240,00034

l, m

10,2871,08631

20,2561,01788

30,3871,25137

40,3171,13152

50,2511,00986

60,2060,91437

70,2591,02304

6. Prelucrarea datelor experimentale:

9.73427;

0.0600

-0.000007;

0.0590

-1.218799;

0.0049701/s;

7. Calculul erorilor:0.015780;

0.001621;

0.005770

0.096167;

0.000063;

0.005690

0.096441;

7.454082;

0.000391/s;

0.078471;

8. Rezultate finale:( 9.730.01 );

0.2%;

( 0.0600.006 )

10%;

( 0.0590.006 )

10%;

( 0.00490.0004 )1/s;

8%.

9. Concluzii:Concluzie: Aceasta experienta ne-a permis sa masuram indirect acceleratia gravitationala construind dupa punctele experimentale graficul dependentei liniare de forma

Obtinind valoare de 9.730.01 si comparind cu valoarea deja cunoscuta constituie o confirmare a valorilor determinate ale coeficientului de rezistenta si in acelasi timp experienta demonstreaza ca valoarea coeficientului de armotizare a oscilatiilor a pendulului grafitational este de ordinul 0,005

10. Graficele dependenelor studiate:

Fig.1

Fig.2

Fig.3

Fig.4

_1251812953.unknown

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_1251813372.unknown

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