際際滷

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塀 犖 F           4                                                                                                 犖                                    2
             40204                                                                                                       犖                     犖                 F 2
                                                    ( 犖F                                      )
                  犖         6                                                                                                                           15

      犖                         2             F F                                                                            犖     F
     F犖                                       F 犖 犖, ,                                                           犖 F
犖

1.                     F                                                                                                F                  F 犖 F
                                                                                                                   +                                         -
                                                                                                                   +                                         -
               +                                                   _                                  2.           +                                         -
      1.                                                                                                           +                                         -
                                                                                                                   +                                         -
                                                                                                                   +                                         -
                                                                                                                   +                                         -
                   +                                       -
                   +                                       -
                   +       A.                  B.          -
      3.           +                                       -
                   +                                       -                    F A                                                犖犖 F                     F B
                   +                                       -
 F 犖               +                                       -

犖. F 1, 2          3                    . F 1, 3                             . F 1, 2                                        . F 2, 3

2.              F               F
1).       F                                     犖             F                             F                                         
2).                                    犖      F
3). F                              F        犖 犖                       F F            犖
 F 犖
犖. F 1, 2 3                             . F 1, 3                             . F 1, 2                                        . F 2, 3

3.               8 x 10-13 kg 犖         F                                                                  F                                                           
        5 x 106 N/C                                                          犖         F
           -21                     -20                                                 -19
犖. 1.6 x 10 C            . 1.6 x 10 C                                        . 1.6 x 10 C                                    . 1.6 x 10-18 C

4.      犖                  9.1 x 10-31 kg                                     1.6 x 10-19 C                       F                                
   9 x 10-10 N/C                 F 犖 m/s2
犖. 3.2 x 102                   . 1.6 x 102                                   . 0.8 x 102                                     . 0.4 x 102
5.    犖          犖 犖 4 x 10-3 N 犖 犖                               犖 F         犖         5 cm                             6 x 10-9 C   F
    犖            犖 F 犖           37      犖                                       F                                     cot 37属 = 4/3
犖. 1.25 x 106 N/C        . 1.2 x 106 N/C                                . 0.8 x 106 N/C                      . 0.5 x 106 N/C

6.           F X F               犖                     1.08 x 10-1 C           1.8 m                                                   犖 N/C
犖. 3 x 108 N/C                           . 9 x 108 N/C             . 2.7 x 109 N/C                           . 5.4 x 109 N/C

7.     犖 F 6. F                                1.024 C         F 犖                      F X                     4.8 m                       犖犖
            F       F                            1.08 x 10-1 C 犖                     F X 犖                   F               F X
                犖 N/C
犖. 0.4 x 109 N/C                         . 0.5 x 109 N/C                . 0.9 x 109 N/C                      . 1.0 x 109 N/C

8.               犖       犖                           8 cm                   犖 10 cm                 2 x 10-10 C          犖         F                 
                             犖               犖              犖 N/C
犖. 0 , 281                               . 281 , 0                      . 0 , 180                            . 180 , 0

9.                                      (E)          104 N/C                                            犖           0.04 g                      F
            F 4 m/s2 犖                                                                犖         F
犖.    犖 , 1.6 x 10-8 C . 犖 , 2.4 x 10-8 C                               .         , 1.6 x 10-8 C             .     , 2.4 x 10-8 C

10.          F                   F         犖                                3 cm                                  104 N/C
               F                    犖        1 cm
犖. 0.11 x 104 N/C                        . 0.33 x 104 N/C                   . 3 x 104 N/C                    . 9 x 104 N/C
塀 犖 F   4 ( 40204)                   犖       2
                            犖F
  犖 幣 6                              犖   犖       F 2




                       犖F
                       F
                      1
                      2
                      3
                      4
                      5
                      6          犖
                      7
                      8
                      9
                     10

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15.2

  • 1. 塀 犖 F 4 犖 2 40204 犖 犖 F 2 ( 犖F ) 犖 6 15 犖 2 F F 犖 F F犖 F 犖 犖, , 犖 F 犖 1. F F F 犖 F + - + - + _ 2. + - 1. + - + - + - + - + - + - + A. B. - 3. + - + - F A 犖犖 F F B + - F 犖 + - 犖. F 1, 2 3 . F 1, 3 . F 1, 2 . F 2, 3 2. F F 1). F 犖 F F 2). 犖 F 3). F F 犖 犖 F F 犖 F 犖 犖. F 1, 2 3 . F 1, 3 . F 1, 2 . F 2, 3 3. 8 x 10-13 kg 犖 F F 5 x 106 N/C 犖 F -21 -20 -19 犖. 1.6 x 10 C . 1.6 x 10 C . 1.6 x 10 C . 1.6 x 10-18 C 4. 犖 9.1 x 10-31 kg 1.6 x 10-19 C F 9 x 10-10 N/C F 犖 m/s2 犖. 3.2 x 102 . 1.6 x 102 . 0.8 x 102 . 0.4 x 102
  • 2. 5. 犖 犖 犖 4 x 10-3 N 犖 犖 犖 F 犖 5 cm 6 x 10-9 C F 犖 犖 F 犖 37 犖 F cot 37属 = 4/3 犖. 1.25 x 106 N/C . 1.2 x 106 N/C . 0.8 x 106 N/C . 0.5 x 106 N/C 6. F X F 犖 1.08 x 10-1 C 1.8 m 犖 N/C 犖. 3 x 108 N/C . 9 x 108 N/C . 2.7 x 109 N/C . 5.4 x 109 N/C 7. 犖 F 6. F 1.024 C F 犖 F X 4.8 m 犖犖 F F 1.08 x 10-1 C 犖 F X 犖 F F X 犖 N/C 犖. 0.4 x 109 N/C . 0.5 x 109 N/C . 0.9 x 109 N/C . 1.0 x 109 N/C 8. 犖 犖 8 cm 犖 10 cm 2 x 10-10 C 犖 F 犖 犖 犖 N/C 犖. 0 , 281 . 281 , 0 . 0 , 180 . 180 , 0 9. (E) 104 N/C 犖 0.04 g F F 4 m/s2 犖 犖 F 犖. 犖 , 1.6 x 10-8 C . 犖 , 2.4 x 10-8 C . , 1.6 x 10-8 C . , 2.4 x 10-8 C 10. F F 犖 3 cm 104 N/C F 犖 1 cm 犖. 0.11 x 104 N/C . 0.33 x 104 N/C . 3 x 104 N/C . 9 x 104 N/C
  • 3. 塀 犖 F 4 ( 40204) 犖 2 犖F 犖 幣 6 犖 犖 F 2 犖F F 1 2 3 4 5 6 犖 7 8 9 10