5.3
- 1. 塀 犖 F 1 犖 3 40201 犖 犖 F 3 ( 犖F ) 犖 4 15 犖 3 F F 犖 犖 犖 犖 犖 F 犖 犖 犖 F F犖 F 犖 犖, , 犖 F 犖 F F F 1 3 犖F 50.0犖 犖 犖 犖 200 1. 犖 F 犖F F 4 犖. 1.0x105 J . 2.0x104 J . 4.0x104 J . 6.0x104 J 2. F 犖F F 4 犖. 1.0x105 J . 2.0x104 J . 4.0x104 J . 6.0x104 J 3. F 4 犖. 1.0x105 J . 2.0x104 J . 4.0x104 J . 6.0x104 J X 4. 犖犖 犖 犖 犖 X F Y Y Y F 犖 F X F 犖 2/5 X F F Ep 犖F F F F X Ek F F Y 犖 F Ep 2 3 3 5 犖. Ek = Ep . Ek = Ep . Ek = Ep . Ek = Ep 3 2 5 3 F F F 5- 7 0.2 犖 犖 F 3 犖犖 x,y z F F F 犖 Y 5. F F Y Y 犖 Z 犖. 0 J .2J . 4J .6J X 6. F X 犖. 0 J .2J . 4J .6J 7. 犖F F Z F Z F F犖 2 犖. 0 J .2J . 4J .6J
- 2. 50 s 8. 犖 F F N 犖. 65 % . 70% . 75 % s/2 8 . 80% kg 9. F F F F 犖 3N 犖. 33.33 % . 66.67% 4N . 75.00 % 30 . 80.00% 3 F= N 10. 犖 F F 20 kg 犖. 33.33 % 0.5 m . 66.67% . 75.00 % } 1 cm . 80.00%
- 3. 塀 犖 F 1 犖 3 犖F 40201 犖 幣 4 犖 犖 F 3 犖F F 1 2 3 4 犖 5 犖 6 7 8 9 10