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ISSN1672-4305CN12-1352/NLABORATORYSCIENCE16420138Vol.16No.4Aug.2013邓锂强(广东石油化工学院理学院,广东茂名525000)20g19%。O313.3Adoi10.3969/j.issn.1672-4305.2013.04.009ErroranalysisoftheexperimentofexperimentalinstrumentoftherigidbodymomentofinertiaDENGLi-qiangCollegeofScienceGuangdongUniversityofPetrochemicalTechnologyMaoming525000ChinaAbstractThispaperanalysisedthesourceoferroroftheexperimentofexperimentalinstrumentoftherigidbodymomentofinertiaandpointedoutthemainfactorscausingerrorsisdisaccuratetimemeas-urementandmomentofresistance.Wemeasuredmomentofresistanceandquantitativeanalysisedoftheinfluenceofthemomentofresistance.Whenthemassis20gtheratioofmomentofresistanceandtensionmomentofweightisupto19%.Keywordserrortimemeasurementmomentofresistancemodification。。、。。11.11。ArBB'm0BB'OO'。Cm。CED。HF1-2。11.2M=Iβ1MIβ。TrMμTOO'r。、ma1-21Mμrhm0mtMμm=2hIgr21t2+Mμgr=k11t2+c12m-1t21k1Ic1Mμ。2hmm0Mμrr=2hImg1t2r+Mμmg=k21t2r+c23r-1t2r1k2Ic2Mμ。3rhmm0115'24'33'。OO'm033'I1=I0+I'0Cm024'I2=I0+I'0C+2m0d2m015'I3=I0+I'0C+2m02d2I2-I1I3-I1==1443-4。22.1t0.10.2Ut=0.2st25gt5Utt4%。1-2UII=Umm2+2Urr2+2Utt2+Uhh槡255Utt2Utt8%UII。t。5-8。2.2hh2mmh1m0.2%。r。2.3g>>aag>>a。1-2mgr=Mμ+mβr2+Iβ=Mμ+I+mr2β6aImr2mr2mr。mra9。2.4φ=0.8mm0.4g。。m'hM'1=m'hgrE1=m'hgrmgr=m'hm71m0.4g5g8%30g1.4%。M'1=m'hgrM'1=m'hgr。2.5。82邓锂强:刚体转动惯量实验仪实验的误差分析φ=0.8mmr=20mmr+φ=20.8mm4%r+2φ=21.6mm8%。。。2Tr。θM'2=Trcosθ。23。Tr。θM'3=Trcosθ。θM'3=Trcosθ。φL10-11。3h。2M'2=Trcosθ。2.6Mμ、、。。。312。MμMμ。9-1013。MμMμ。3Mμ3.14。B15mmKOO'P。B、B'π2π。5~15mm。OO'。3.2Mμ4。ΔS“A”0.1ms924OO'R。2FTr。FΔt1Δt2、Δt3、Δt4。、v1=ΔSΔt1v2=ΔSΔt2ROO'OO'ω1=v1R=ΔSΔt1R、ω2=ΔSΔt2R。、maM=mg-ar8θ=ω1t+12βt29ω2=ω1+βt10tθ=2π。10t=ω2-ω1β11119β=ω22-ω212θ12M-Mμ=mg-ar-Mμ=Iβ13M=mg-arMμ13a=βrI=mg-ar-Mμβ=mgr-Mμβ-mr2141214I=2θω22-ω21mgr-Mμ-mr215ω1=v1R=ΔSΔt1R、ω2=ΔSΔt2R15I=2θR2ΔS2mgr-Mμ·11Δt22-1Δt21-mr216Mμ<<mgrMμI=2mgrθR2ΔS2·11Δt22-1Δt21-mr217ω1=v1R=ΔSΔt1R、ω2=ΔSΔt2R12β=ΔS22θR21Δt22-1Δt2118m05、5'Δt1、Δt2、Δt3、Δt4Mμ17I。Δt1、Δt2、Δt3、Δt418βm=0Mμ=Iβ19MμC。3.31R1ΔS2。122m05、5'r=15.00mmm=15.00gFΔt1、Δt2、Δt3、03邓锂强:刚体转动惯量实验仪实验的误差分析Δt43。3r=15.00mmm=15.00g3m05、5'0.1msΔt1、Δt2、Δt3、Δt44。44317Mμm05、5'I55'=1.807×10-3kg·m2418Mμm05、5'β=-0.2974/2MμMμ=I55'β=1.807×10-3×-0.2974=-5.37×10-4N·m5MμMμg>>aa5Mμ。Mμ。3.4MμMμ。1Mμm05、5'I55'MμI55'Mμ。2Mμ、。3。2UΔt=0.2msΔt414.9msUΔtΔt=1.4%。。4Mμ。20g19%MμMμ。5-83%。References1.M.2002106-109.2.M.200255-58.3.M.2004248-255337-339.4.M.2008151-159.5.J.200524437-39.6.J.1999285-87.7.J.200115473-74.8.J.2006574-76.9.J.199210237-44.10.J.201232525-27.11.J.2008682-83.12.M.2004540-550.13.J.201225551-53.2013-02-282013-04-291970-。13
本文标题:刚体转动惯量实验仪实验的误差分析_邓锂强
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