有,等等??????????????????1.?????V=s/t=2??r/T 2.??????=??/t=2??/T=2??f????3.????????a=V2/r=??2r=(2??/T)2r 4.??????F??=mV2/r=m??2r=mr(2??/T)2=m??v=F????????(???????????????????)????1)???????????1.????G=mg (??????????￡?g=9.8m/s2??10m/s2?????????????????????????渽??)????2.??????F=kx {?????????α???k?????????(N/m)??x???α???(m)??????3.?????????F=??FN {??????????????????????????????FN???????(N)??????4.???????0??f????fm (???????????????????????fm?????????)????2)??????????????1.????????????????:F=F1+F2?? ????F=F1-F2 (F1>F2)????2.?????????????????F=(F12+F22+2F1F2cos??)1/2(???????) F1??F2?:F=(F12+F22)1/2????3.??????С??Χ??|F1-F2|??F??|F1+F2|????4.????????Fx=Fcos?￡?Fy=Fsin??(?????????x??????н?tg??=Fy/Fx)????(1)??(???)??????????????????ζ???;????(2)????????????????Ч?????,???ú?????????????????,????????;????(3)????????????????????,?????????,??????;????(4)F1??F2???????,F1??F2??н?(????)??