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1 ( ) c a sin b c b c a cos a c b c a tan b a b cos sin a c b c a ccos b csin

2 (4) Ma k Mg a (Gal) g(98gal) (Gal) a max (K-E) kh Zck Ma g a k a g k D τ f c + σ tanφ σ 3 3 /A τ f3 S S τ A σ /A σ /A τ f τ f φ σ A S τ A ε D c σ σ σ 3 σ 3

3 c c c S f S f S f tanφ c A S f ca + tanφ φ tanφ c A S f ca + tanφ φ tanφ S f tanφ φ Mj

4 4 kg 3 V.5m/s.5m h.5m 6 k A c φ c φ 7

5 (a) (b) sin cos sin S f ca + tanφ ca + cos tanφ F s S f c A + cos tanφ sin 8 (a) (b) k cos sin k k sin k cos F s S f c A + (cos k (sin + k sin ) tanφ cos ) sin + k cos cos k sin 9

6 + + k k k sin cos k k cos sin + + k (sin + k (cos k cos ) sin ) (a) (b) α cosα α sinα k cos k sin k sin k cos (sin + k cos ) cosα (cos k sin ) + sinα F s S f c A + { (cos k (sin + k sin ) + sinα}tanφ cos ) cosα

7 Vm 3 γ6k/m 3 A3m 45 F s. F s φ c c A + cos tanφ. sin c (sin cos tanφ) A k. F s φ c F s c A + (cos k (sin + k sin ) tanφ cos ) Vm 3 γ6k/m 3 3,k φc β5 α β3 45 k F S. k. F S.5 F s c A + { (cos k (sin + k sin ) + sinα}tanφ cos ) cosα { F ( sin + k cos ) ( cos k sin ) tanφ} s s F cosα + sinα tanφ c A 3

8 ( p354) (a) (b) cos sin cos sin 35 F s c A + ( cos + sin ) tanφ sin cosα ( Fs sin cos tanφ) c A F cosα + sin tanφ s 4 3 ( p354) (a) (b) φ, c F s A + ( cos + sin ) sin cosα tan 5

9 4,5k,73k Vm 3 β5 3 7 G/O 8 n8 R 57k 45 ω5 ω5 n cosω ω5 6 A s A s d σ sa L τ ca τ p τ pa F s D σ ck 4/mm τ ca.6/mm.49.8 τ pa.5.59/mm. SD95 σ sa 6/mm τ c τ ca τ p τ pa σ s σ aa πdl πdl As 7

10 V (a) (b) (c) 8 a b V s m 3 V s m 3 s s 5.5m.5m 5.5m.5m.5m.75m.m a c c b.m.m s.5m.75m.m a c c b.m.m s 9

11 c i+ i i i+ A ( x y x y ) y(m) x G G Gx + 3 ( x ) + ( )( + ) i+ xi yi yi+ yi yi yi Gy + 3 ( y ) + ( )( + ) i+ yi xi xi+ xi xi xi..5 y G G x G A y c x(m) G y G A x c 6@4.4m F (sin µ cos ) L4m F F m Sm Sm µcos cos p sin m ~6

12 V pl V pl p A B f L pl 8 f pl L + 4 f V L/4 pl w pl V + C pl pl 8 + f M ata A L/ C L L pl C f 4 C pl 8 f f 3

13 G/O6 3 ( galvanize) 6mm ( ordinary)z G/O (mm) A (mm ) y (k) b (k) k L5m 4 µ.65 3m m 85 5

14 sin mgsin mg µ mgcos mgcos E ( mg sin µ mg cos ) sin sin µ cos mg sin V µ mg tan E µ mv mg tan V µ g tan 6 Vcos Vsin V.6.4 µ....8 µ µ.35. µ µtan tan µ E m( V sin ) mg sin tan 7

15 8.5D l3m R R ϕ sinα l h 7.85k a D δ δ α 4 sin + h δ δ α 4 4 sin h F + δ α h/4.5m h5m D α α Fsinα sinα sinα δ +h /4 9 Fsinα sinα sinα 7.85k h5m L3m sin sin sin sin δ α α ϕ ϕ sinα 7.85k

16 E Fdδ ( Fi + Fi )( δi δi ) F sinα 4δ 4 + h δ δ α α h δ (m) F (k) E (k m) F δ 7.85k 4δ + h E (kj) (k) δ E 5 5 Fdδ F(k) δ ι ι- 8 6 F ι F ι δ(m) δ(m) δ(m) 3 l L sinα φ sinα sinϕ 5 sinϕ l l l cosφ cosφ ε L l L cosφ l EAε EA L cos φ 5δ a Fsinα α α 4δ a EA δ L E R L EA ( ) sin α 5 δ a δ L EA L δ EA 3

17 E E E + R + E L E E m v E L E m m + m 33 v m v m v 3 v 3 3 v m m v v m v v v t v mv E E R E L mv t

18 E E + E R + E L E E E + E R E 34 m8t.35 (.5.35) 47 8m µ E mg β tan kJ ( + ).35 tan 47. 8t 8k.9 (.6.) E kj.9 tan 47. kj 35

19 b.6m m.t v4m/s ma 3m :n:.3 y.7m B.5m t.5 (s) t 36 mv ( t) dt -mv ( t) ma mv mv ( t) dt v e v mv ( + e) ( t) dt ( t) dt t t t mv + e) ( t mv mv mv ( t) dt t -mv 37

20 3 b m (k) () () () () () () v (m/s) :.3 m.t v (m b.m) (m b.4m) (3m b.6m) 38 m.t v 4m/s v ev.8m/s M7.88t V mv ( + e) m + V M Mgµ.5m δ.m.5m MV Mgµδ δ V gµ 39

21 ω V yω m.t v 4m/s ω mv ( + e) I + my y G r.6m G 36 y.5m y G.9m y.7m 3.m E r I ω y Iω Mg Mg y.54 x G.94m.5m 4 (.5m) /3(sec) 9/3(sec) 6/3(sec) 4/3(sec) 8/3(sec) 5/3(sec) 45/3(sec) 39/3(sec) 33/3(sec) 4

22 V V V wl a V + 4 sin sin E sin δ δh/4 δ 43

23 L sin sin sin 44 45

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untitled 1 17 () BAC9ABC6ACB3 1 tan 6 = 3, cos 6 = AB=1 BC=2, AC= 3 2 A BC D 2 BDBD=BA 1 2 ABD BADBDA ABC6 BAD = (18 6 ) / 2 = 6 θ = 18 BAD = 12 () AD AD=BADCAD9 ABD ACD A 1 1 1 1 dsinαsinα = d 3 sin β 3 sin β