v | 0 |
a | A |
a | B |
a | C |
a | A |
a | C |
a | B |
a | B |
a | C |
a | B |
a | C |
1 |
2 |
v | 1 |
v | 0 |
v | 1 |
S | 1 |
S | 1 |
1 |
2 |
v | 21 |
1 |
2 |
v | 20 |
S | 1 |
1 |
2 |
v | 21 |
gS | 1 |
1 |
2 |
v | 21 |
1 |
2 |
v | 20 |
v | 0 |
3μmgL |
v | 0 |
3μmgL |
v | 0 |
3μmgL |
v | 0 |
3μmgL |
v | 0 |
3μmgL |
v | 0 |
v | A |
v | B |
v | C |
v | A |
v | B |
v | B |
v | C |
v | ′A |
v | ′B |
v | ′C |
v | ′A |
v | B |
v | ′B |
v | A |
v | ′C |
v | C |
v | ′B |
v | 2 |
v | 0 |
v | 2 |
v | 0 |
1 |
2 |
v | 22 |
1 |
2 |
v | 20 |
v | 0 |
6μmgL |
v | 0 |
6μmgL |
v | 0 |
6μmgL |
v | 0 |
6μmgL |
v | 0 |
6μmgL |
v | 0 |
v | ″A |
v | ″B |
v | ″C |
v | ″B |
v | ″A |
v | ″C |
v | ″′A |
v | ″′B |
v | ′″C |
v | ″′B |
v | ″C |
v | ″′C |
v | ″B |
|
v | ″A |
v | ″′C |
v | ″A |
v | ″′B |
a | C |
a | A |
a | B |
| 0 |
v | 3 |
v | 3 |
v | 0 |
v | 0 |
1 |
2 |
v | 23 |
1 |
2 |
v | 20 |
v | 0 |
12μgL |
v | 0 |
12μgL |
v | 0 |
12μgL |
v | 0 |
12μgL |
v | 0 |
12μgL |
v | 0 |
v | ″′A |
v | ″′B |
v | ″C |
v | ″′A |
v | ″′B |
v | ″′C |
v | 0 |
mv | ″″A |
mv | ″″C |
1 |
2 |
(2m)v | ″″2B |
1 |
2 |
v | ″″2C |
1 |
2 |
v | 20 |
v | 4 |
v | ″″B |
v | ″″C |
v | 4 |
1 |
2 |
(2m)v | 24 |
1 |
2 |
mv | ″″2B |
1 |
2 |
mv | ″″2C |
v | 0 |
μmgL |
v | 0 |
μmgL |
v | 0 |
μmgL |
v | 0 |
μmgL |
A.滑块受到的摩擦力不变 |
B.滑块到达地面时的动能与B的大小无关 |
C.滑块受到的洛伦兹力方向垂直斜面向下 |
D.B很大时,滑块可能静止于斜面上 |
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