Fs1cosθ |
(mg-Fsinθ)s1+mgs2 |
Fs1cosθ |
(mg-Fsinθ)s1+mgs2 |
A.绳子拉力变大 |
B.地面对物体B的支持力变大 |
C.地面对物体B的摩擦力变小 |
D.物体B受到的合力变小 |
A.若地面是完全光滑的,则FAB=F | ||
B.若地面是完全光滑的,则FAB=
| ||
C.若地面动摩因数为μ,则FAB=F | ||
D.若地面动摩因数为μ,则FAB=
|
A.1m/s2 | B.2m/s2 | C.4m/s2 | D.9m/s2 |
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