A、m<sub>甲sub><m<sub>乙sub> B、m<sub>甲sub>=m<sub>乙sub> C、m<sub>甲sub>>m<sub>乙sub> D、无法确定
A、F<sub>1sub>=6N,F<sub>2sub>=0 B、F<sub>1sub>=0,F<sub>2sub>=6N C、F<sub>1sub>=F<sub>2sub>=8N D、F<sub>1sub>=6N,F<sub>2sub>=8N
A、某轴用一对圆锥滚子轴承支承,外圈窄边相对安装,已知两轴承所承受的径向载荷分别为F<sub>rⅠsub>=9000N,F<sub>rⅡsub>=5000N,其内部轴向力分别为F<sub>SⅠsub>=2430N,F<sub>SⅡsub>=1350N,传动件作用于轴上的轴向力F<sub>Asub>=1000N,判断系数e=0.32,当F<sub>asub>/F<sub>rsub>≤e时,X=1,Y=0,当F<sub>asub>/F<sub>rsub>>e时,X=0.4,Y=1.88。试分别计算出轴承的当量动载荷。
A、e<sub>1sub>c<sub>1sub>F<sub>1sub>=e<sub>2sub>c<sub>2sub>F<sub>2sub> B、c<sub>1sub>F<sub>1sub>=c<sub>2sub>F<sub>2sub> C、c<sub>1sub>/c<sub>2sub>=F<sub>2sub>/F<sub>1sub> D、c<sub>1sub>/c<sub>2sub>=F<sub>1sub>/F<sub>2sub>
A、F<sub>甲sub>=F<sub>乙sub>ρ<sub>甲sub>〉ρ<sub>乙sub> B、F<sub>甲sub>=F<sub>乙sub>ρ<sub>甲sub>〈ρ<sub>乙sub> C、F<sub>甲sub>〈F<sub>乙sub>ρ<sub>甲sub>〈ρ<sub>乙sub> D、F<sub>甲sub>〈F<sub>乙sub>ρ<sub>甲sub>〉ρ<sub>乙sub>
A、必有F<sub>Rsub>=F<sub>1sub>+F<sub>2sub> B、不可能有F<sub>Rsub>=F<sub>1sub>+F<sub>2sub> C、必有F<sub>Rsub>>F<sub>1sub>,F<sub>Rsub>>F<sub>2sub> D、可能有F<sub>Rsub><F<sub>1sub>,F<sub>Rsub><F<sub>2sub>
A、ν<sub>1sub>>ν<sub>2sub> B、ν<sub>1sub><ν<sub>2sub> C、ν<sub>1sub>=ν<sub>2sub> D、ν<sub>1sub>与ν<sub>2sub>的关系还不能确定
A、F<sub>1sub>=F<sub>2sub> B、F<sub>1sub>-F<sub>2sub>=F<sub>esub> C、F<sub>1sub>/F<sub>2sub>=efα D、F<sub>1sub>+F<sub>2sub>=F<sub>0sub>
A、F<sub>isub>V<sub>isub>=F<sub>isub>+1V<sub>isub>+1 B、F<sub>isub>V<sub>isub><f<sub>i+1V<sub>isub>+1 C、F<sub>isub>V<sub>isub>>F<sub>isub>+1V<sub>isub>+1f<sub>