1. F F ʾ 2555
F (X) 7. F F F
F F F F 40 F F F
F F 12 F ˈ
1 ˈ F 4 10 F F ( F g = 10 m/s2 )
5 . 240 . 480
1. 17 F F F . 720 . 1,200
. 1.7 x 10- 6 m3 . 1.7 x 10- 4 m3 8. 2 15 20 F
. 1.7 x 10- 3 m3 . 1.7 x 10- 1 m3 F F
2. F F 54 F . 5 N, 35 N . 5 N, 35 N
F F .10 N, 35 N . 5 N 45 N
. 10 m/s . 15 m /s 9. F ˈ F F F
. 20 m /s . 25 m /s . 25 N . 30 N
3. 8 F . 35 N . 40 N
F 6 F 10. 5 2 F 37
F F ( cos
. 7 , 14 . 9 , 14 4
37° = )
. 10 , 14 . 12 , 14 5
. 4 5 N .3 5 N
4. F 3 F F 2
.2 5 N . 5 N
F
////////////////////////////////////////////////////////////////////////////////////
. 6 , 7 . 5,7
. 4.5 , 7 . 3.5 , 7 F
5. F F http://krunok2555.wordpress.com
F ˈ F
. F ˈ F
. ˈ F F F F ˈ F
. F ˈ F F F ˈ F
. F F ˈ F
6. FA FB
F F 3 1.8 F( )2
F 6 FA F F FB
. 21.6 . 32.6
. 54.0 . 86.6