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结 束,验证力的平行四边形定则(实验提能课),理清实验要点,抓牢常规考点,课时达标检测,突破创新考点,1/27,2/27,3/27,4/27,5/27,6/27,7/27,8/27,9/27,10/27,11/27,12/27,13/27,14/27,15/27,16/27,试验原理,迁移,利用三力平衡结论,一个力与另外两个力协力等大反向,验证这个力与另外两个力关系。,试验器材改进,17/27,F,/N,0,0.50,1.00,1.50,2.00,2.50,l,/cm,l,0,10.97,12.02,13.00,13.98,15.05,18/27,19/27,20/27,21/27,22/27,23/27,24/27,25/27,26/27,27/27,
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