2012高一物理学案3.2《弹力》(人教版必修1)

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1、2012高一物理学案3.2《弹力》(人教版必修1)3.2《弹力》学案新人教版必修1一、学习目标1.知道弹力是接触力，本质是电磁力。2.知道形变、弹性形变的概念，理解弹性限度3.知道什么是弹力，掌握弹力产生的条件4.知道压力、支持力、绳的拉力都是弹力，会确定它们的方向5.知道弹簧形变与弹力的关系，掌握胡克定律二、课前预习1、叫做形变。所有物体均能发生形变。2、叫弹性形变，叫范性形变，叫弹性限度。3、弹力：，弹力产生的条件是。弹力的方向与物体的形变方向（相同或相反）；与使物体产生形变的力的方向；弹力是发生形变产生的（施力物体或受力物

2、体）。4、弹力的方向：1、面面接触：；2、点面接触：；3、点点接触：organizationsystemandworkingmode,theselectionofanumberofmunicipalstrengtheninggrouptobuildinnovationandstrengthentheorganizationofthebasiclevelorganizationsadvancedmodel.(seven)themanualworkoftheCommunistYouthLeagueOrganizationpublis

3、hed<>and<>Leaguebranchofmanualwork,topromotetheuseoftwomanualsinthecity'sorganizationsatvariouslevels.Thecountycommittee,directlyunderthegroup(work)isunderthejurisdictionofgrassrootsLeagueandgroup(total)usingbranchratioshallnotbelessthan70%.Three,tofurtherstrengthent

4、hegroup'sleadershipandteambuilding(a)tostrengthentheleague'sleadershipatalllevelsofconstruction.ContinuetodoagoodjobofmunicipalPartyCommitteeOrganizationDepartment"onthestrengtheningoftheCommunistYouthLeaguecadresmanagementopinionsimplementation.Topromotethegroupcoun

5、ties(autonomouscounties,cities)Commissionandcitydirectlyunderthegroup(workers)appointedtocarryoutthe"Five"teambuildingactivities.ImprovetheLeagueAssociationDepartmentworkingmechanism.ConscientiouslyfulfillthedutiesofCO,combinedwiththecitygroupdirectlyunder(the)Commit

6、teeofthegeneralelectionandtheadjustment,activelyjointlywiththeunitwherethepartyorganizationdepartmentgoodgroupleadershipselectionwiththework.DoagoodjobinmunicipalPartycommitteeassistantcommitteeleadershipandleadingcadresoftheannualassessmentwork,adheretoandimprovethe

7、assistantsecretaryoftheCommunistYouthLeaguetalksystemgroupToweaveindividualconversationandcollectiveconversation,tostrengthenthecommitteesofalllevels,theStandingCommitteeoftheStandingCommittee,theestablishmentofasoundsystemofcentralgrouplearning,thesystemofinvestigat

8、ionandstudy,thesystemofimportantissuesandthereportingsystem.(two)tostrengthentheworkofeducationandtrainingofcadrestoconscientiously