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ˮƽƽ̨ʹֱƽ̨ʲôͬ?ֱƽ̨ˮƽƽ̨ͬ1ͬӰ ֱһҪSHUԪأֱӰ

ͼ,һˮƽƽֱ̨г˶,һƽ̨һƽ̨˶͵ʱļٶֱϣڳ״̨̬ѹˣƽ̨˶

ͼʾ,һˮƽƽֱ̨ת,ƽֱ̨Ϊ2mfC=mC2rC=12mA2?2rA=mA2rAaܵĦbܵĦСļٶa=2rͬ

ͼʾ,ˮƽƽ̨abΪ20m,ƽ̨b볤δ֪(1)֪ļٶΪa1=Fcos37-(Fsin37+mg)m=500.8-0.4(500.

ˮƽb2bƽ̨Щ?ͬһͣ໥ҲԴշѣϸֿͣϸֿĻгҲ

Ϸƽ̨ˮƽߵЩ-ٶȾ3 磬Ϸƽ̨ʼˮƽԣ½Ǵʦ4 qqϷƽ̨ˮƽdz࣬

ͼʾ,ˮƽƽ̨Ҷ˰װж,MƽMg)M+m=(1+)MmgM+m2Mmһ˶ʱУ(mg?Mg)h12(M+m)v2mŵغM

ͼʾ,һˮƽƽֱ̨ת,ƽ̨abcabcĽٶͬٶΪأܵľĦֱΪ f A =m A 2 r A f B =m B

ͼʾ,ˮƽƽ̨Ҷ˰װл,ΪM- Mgs=0- 1 2 M v 2 sl-hãa8m/s 2 Ϊa= mg-

ʲôˮƽB2BվˮƽۺB2BӪҵֱB2BǣֻӪijһҵģB2Bƽ̨B2BϵͳԿٰ㽨B2Bƽ̨

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