三支点梁在斜力作用下的反力

GeoGebra 命令及参数

1. Line(A, xAxis) → f
2. Line(B, f) → g
3. Point(f) → C
4. OrthogonalLine(C, f) → h
5. Point(g) → D
6. OrthogonalLine(D, f) → i
7. Intersect(f, i) → E
8. Intersect(g, h) → F_1
9. Polygon(C, E, D, F_1) → c1, c, e, d, f_1
10. Rotate(D, 30°, D) → D'
11. Point(d) → V
12. Vector(W, V) → F
13. Line(V, W) → h_1
14. Line(G, xAxis) → j
15. Point(d) → H
16. Point(j) → I
17. Segment(H, I) → k
18. Point(d) → J
19. Point(j) → K
20. Segment(J, K) → l
21. Point(d) → L
22. Point(j) → M
23. Segment(L, M) → m
24. Line(I, H) → n
25. Line(K, J) → a
26. Line(M, L) → b
27. Intersect(n, a) → N
28. Intersect(h_1, b) → O
29. Line(N, O) → g_1
30. Translate(O, F) → O'
31. Line(O', g_1) → i_1
32. Line(O', b) → j_1
33. Intersect(j_1, g_1) → P
34. Segment(O', P) → k_1
35. Intersect(b, i_1) → Q
36. Segment(O', Q) → l_1
37. Vector(P, O) → v
38. Vector(Q, O) → w
39. Translate(N, v) → N'
40. Vector(N, N') → a_1
41. Line(N', a) → m_1
42. Line(N', n) → n_1
43. Intersect(n, m_1) → R
44. Vector(N, R) → b_1
45. Intersect(a, n_1) → S
46. Vector(N, S) → d_1
47. Segment(R, N') → p_1
48. Segment(N', S) → q_1
49. Translate(M, w) → M'
50. Vector(M, M') → R_3
51. Translate(I, b_1) → I'
52. Vector(I, I') → R_1
53. Translate(K, d_1) → K'
54. Vector(K, K') → R_2
55. Circle(M, 0.15) → c_1
56. Circle(H, 0.15) → p
57. Circle(I, 0.15) → q
58. Circle(J, 0.15) → r
59. Circle(K, 0.15) → s
60. Circle(L, 0.15) → t
61. Vector(O', O) → u