PHY
Physics Lab Report 6.docx

Multiply by the gravitational acceleration of 10 m s

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multiply by the gravitational acceleration of 10 m / s 2 . Determine the torque ( τ ) of each sleeve by multiplying F by the distance x which should result in τ 1 =− 0.304 N ∙m , τ 2 = 0.306 N ∙m for the first experiment and τ 2 = 0.612 N ∙m for second, and τ 3 =− 0.307 N ∙m . Estimate the percentage error of torque ( τ ) by the following formula | τ 1 + τ 2 | | τ 1 | + | τ 2 | 2 *100 for part one which should come around 0.6%. For part two use the following formula | τ 1 | + | τ 2 | + ¿ τ 3 ¿ 3 100 | τ 1 + τ 2 + τ 3 | ¿ which should result in 0.3% error.
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Data : m 1 m 2 m 3 x 1 x 2 x 3 I 0.146k g 0.100k g ____ -0.208m 0.306m ____ II 0.146k g 0.200k g 0.095k g -0.208m 0.306m -0.323m Calculations : I. F 1 = ¿ (0.146)(10)=1.46N F 2 = ( 0.100 ) ( 10 ) = 1 N τ 1 = ( 1.46 ) ( 0.208 ) =− 0.304 N ∙m τ 2 = ( 1 ) ( 0.306 ) = 0.306 N∙m | τ 1 + τ 2 | | τ 1 | + | τ 2 | 2 100 = | 0.304 + 0.306 | | 0.304 | + | 0.306 | 2 = 0.6 II. F 1 = ¿ (0.146)(10)=1.46N F 2 = ( 0.200 ) ( 10 ) = 2 N F 3 = ( 0.095 ) ( 10 ) = 0.95 N τ 1 = ( 1.46 ) ( 0.208 ) =− 0.304 N ∙m τ 2 = ( 2 ) ( 0.306 ) = 0.612 N ∙m τ 3 = ( 0.95 ) ( 0.323 ) =− 0.307 N ∙m | 0.304 | + | 0.612 | + ¿ 0.307 ¿ 2 = 0.3 | τ 1 | + | τ 2 | + ¿ τ 3 ¿ 3 100 = | 0.304 + 0.612 0.307 | ¿ | τ 1 + τ 2 + τ 3 | ¿ Questions: 1) The percentage error in the first experiment is less than 5% and approximately 0.6%.
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2) The percentage error in the second experiment is less than 5% and approximately 0.3%.
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  • Spring '15
  • Mass, Kilogram, M3 Half-track, Maitry Tur, Ulrim Choi, 20.8cm

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