A.△L2>△L1 | B.△L4>△L3 | C.△L1>△L3 | D.△L2=△L4 |
F |
m1+m2 |
m2F |
m1+m2 |
F-μ(m1+m2)g |
m1+m2 |
F |
m1+m2 |
m2F |
m1+m2 |
F-(m1+m2)gsinθ |
m1+m2 |
F |
m1+m2 |
m2F |
m1+m2 |
F-(m1+m2)gsinθ-μ(m1+m2)gcosθ |
m1+m2 |
F |
m1+m2 |
m2F |
m1+m2 |
A.1:1 | B.1:2 | C.2:1 | D.2:3 |
A. | B. | C. | D. |
A.a1=a2=0 | ||||
B.a1=a;a2=0 | ||||
C.a1=
| ||||
D.a1=a;a2=-
|
A.l0-
| B.
| C.
| D.
|
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