11/10/10 1 Physics 12111/10/10 2 Physics 1218.1 8.2 8.3a 0% 1 18% a=b>c=d 46%b 61% 2 20% b>c>a>d 12%c 27% 3 22% b>a=c>d 11%d 8% 4 26% e 2% 5 12% n 1% 6 1% 11/10/10 3 Physics 12111/10/10 4 Physics 12110/31/08 5 Physics 12110/31/08 6 Physics 121 N N N N rod->B B->rod R->rod rod->R 0=++++=+++===BBRRBrodrodBrodRRrodrodrodBBRRrodBrodRrodrodBrodBBRrodRRamamNNNNamamamNNamNamNam10/31/08 7 Physics 121 constant0)(00=+=+=+=+BBRRBBRRBBRRBBRRvmvmtvmvmtvmtvmamamBRBBRRBBRRBBRRBBRRmmrmrmRtRMvmvmtrmtrmvmvm++==++=+10/31/08 8 Physics 121 ==+++=niiirMmrMmrMmrMmR1332211...11/10/10 9 Physics 12111/10/10 10 Physics 121 W F L d FL = Wd11/10/10 11 Physics 121 W F11/10/10 12 Physics 121 W F F R11/10/10 13 Physics 121 sinFRRF ==F R F F11/10/10 14 Physics 121 sinFRRF ==F R F F 11/10/10 15 Physics 121 FR=11/10/10 16 Physics 12111/10/10 22 Physics 121 rightleftdownupnetFFFFF=== 0net = 0 clockwise =
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