qU |
d |
mgd |
q |
d |
2 |
QU |
2 |
1 |
2 |
d |
2 |
QU |
2 |
1 |
2 |
v0 |
2 |
|
1 |
2 |
(Q+q)U |
2 |
2mgd |
2 |
5q |
3 |
5q |
3 |
mgd |
q |
5q |
3 |
A.(M+m)g | B.(M+m)g-F | C.(M+m)g+Fsinθ | D.(M+m)g-Fsinθ |
A.5N和9N | B.2N和5N | C.1N和6N | D.2N和3N |
A.T1不变,T2不变 | B.T1不变,T2变小 |
C.T1变小,T2变小 | D.T1变小,T2不变 |
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