aaa_dundooah_218 - /35 Winter Quarter 2008 Winter Quarter...

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Unformatted text preview: /35 Winter Quarter 2008 Winter Quarter 2008 Experiment: Angular Acceleration Your name: Anish Dundoo Partner: James Schaefer Performed on: 3 rd March, 2008 TA: HyunDeok Song Section number: 218 Promptness % (100 means it was on time): 100 Additional Scores (+)/Penalties (-): Abstract (4) The purpose of this experiment is to identify the experimental value of the moment of inertia of a disk alone and the disk and the ring together rotating about a shaft in order to prove Newtons second law for rotational motion. The calculated value for the moment of inertia of the disk is 0.00749 0.00005 kg*m 2 and for the disk and the ring together is 0.01153 0.00006 kg*m 2 while the measured values were 0.0049 0.0012 kg*m 2 and 0.0141 0.0017 kg*m 2 respectively. These values were calculated using various masses between 50g to 150g that rotated the shaft of the wheel and the software from the computer calculated the angular acceleration. Sample Calculations (5) Calculating the value of the radius (r) =( + )/ r dpulley2 dstring2 100 = . + . / r 1 65cm2 2 540cm2 1m100cm . 0 02096 m = . 2 095 cm100 cm * 1m Calculating the uncertainty of the radius (u{r}) { }= { } + { } u r u dstring 1002 u dpulley 1002 { }= . + . u r 0 010cm1002 0 010cm1002 { }= . + . u r 0 00010m2 0 00010m2 { }= u r 0.00014m Calculating the value for the radius of the disk (r disk ) = + rdisk z100 dhole200 = . + . rdisk 10 81cm100 1 25cm200 . = 0 11435 m 0.1081m + 6.25*10-3 m Calculating the uncertainty of the radius of the disk (u{r disk }) Error: Reference source not found, 09/17/04, Error: Reference source not found u{r disk } = { } + { } u dhole 1002 u z 1002 { }= . + . u r disk 0 010cm1002 0 010cm1002 { }= . + . u r disk 0 00010m2 0 00010m2 { }= u r disk 0.00014m Calculating the value for the radius of the hole (r hole ) = rhole dhole21 m100 cm . = . 0 006235 m 1 25 cm21 m100 cm Calculating the uncertainty of the radius of the hole (u{r hole }) u{r hole } = { } u z 100 u{r hole } = . 0 010 * cm100cm m u{r hole } = 0.0001m Calculating the value for the inner radius (r inner ) = rinner dinner21 m100 cm . = . 0 0537 m 10 75 cm21 m100 cm Calculating the uncertainty of the inner radius (u{r inner }) u{r inner } = { } u d inner 100 u{r inner } = . 0 010 * cm100cm m u{r inner } = 0.0001m Calculating the value for the outer radius (r outer ) = router douter21 m100 cm . = . 0 0636 m 12 73 cm21 m100 cm Page 2 of Word document Error: Reference source not found, 09/17/04, Error: Reference source not found Calculating the uncertainty of the outer radius (u{r...
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aaa_dundooah_218 - /35 Winter Quarter 2008 Winter Quarter...

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