资源描述：
《..牛顿第二定律的应用（application of .. newton's second law）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、03.6.牛顿第二定律的应用（Applicationof03.6.Newton'ssecondlaw）SolvingproblemswithNewton'ssecondlawFirst,teachingobjectives1.requirementsforphysicalknowledge:(1)consolidatethecontent,formulaandphysicalmeaningofNewton'ssecondlawofmemory;(2)mastertheapplicationofNewton's
2、secondlaw.2.throughtheexampleanalysis,discussionandpracticetoenablestudentstomastertheapplicationofNewton'slawtosolvemechanicalproblems,cultivatetheirabilityofstudents'comprehensiveabilityandabilityofusingmathematicaltools.3.trainstudents'abilityofsolvingpr
3、oblems,drawing,analyzingandcompletingsteps.Two.AnalysisofkeyanddifficultpointsThe1.dayexercise,focusonselectedexamples,twokindsofmechanicalproblemsmadebyNewton'ssecondlawandsolvethebasicmethodtosolvethiskindofproblems.2.,itisimportanttoanalyzetheprocessande
4、stablishtheprospectbyapplyingNewton'ssecondlaw;graspthemovement,forceandinitialconditions,andsolvetheequationsaccordingtothelaw.Butstudentsoftenhavetheconclusion,thelightprocess,thehabitoftheformularesults,soitisdifficulttotrainstudentsgoodproblem-solvingha
5、bits,establishideas,graspthemethod.Three,teachingaidsProjector,projectorandcrayons.Four,themainteachingprocess(1)introducingnewcoursesThesecondlawofNewtonrevealstheinternalrelationbetweenmotionandforce.Therefore,Newton'ssecondlawcanbeusedtosolvesomemechanic
6、alproblems.WeusethefollowingexamplestounderstandtheapplicationofNewton'ssecondlawproblemsolvingideas,methodsandsteps.(two)teachingprocessdesign1.theforcesituationisknowntosolvethemotionExample1(projection),anobjectrestingonthehorizontalplane,themassis2kg,th
7、ehorizontaldirectionofthepullby5.0N,theobjectslidingwiththehorizontalsurfacefrictionis2.0N.1)calculatethespeedoftheobjectattheendof4seconds;2)ifin4secondsattheendofremovedpullobjectsforslidingtime.(1)thetopicanalysisThistopicisbasedontheknownforcesituationt
8、ocalculatethemovementofobjects.Movementinthefirst4seconds:theobjectisuniformlyacceleratedlinearmotionundertheactionofstaticforce,t=4.0s.Stresscondition:F=5.0N,f=2.0N,G=N;initialcondition:v0=0;studyobje
