球体在扇形内的受力分析

GeoGebra 命令及参数

1. Polygon(P, Q, R, S) → poly3, p_1, q_1, r_1, s_1
2. Point(xAxis) → K
3. PointIn(poly3) → A
4. Circle(A, 2) → c
5. Intersect(xAxis, yAxis) → B
6. Tangent(B, c) → f, g
7. Point(f) → H
8. Point(g) → I
9. Angle(xAxis, f) → α
10. Angle(f, g) → β
11. Intersect(c, f, 1) → C
12. Intersect(c, g, 1) → D
13. Line(C, A) → h
14. Line(D, A) → i
15. Circle(D, sin(α) / sin(β)) → d
16. Circle(C, sin(α + β) / sin(β)) → e
17. Intersect(d, i, 2) → F
18. Intersect(e, h, 2) → G
19. Vector(D, F) → u
20. Vector(C, G) → v
21. Polygon(H, L, K, B) → poly2, k, p, q, r
22. Polygon(J, E, I, B) → poly1, j, l, m, n
23. Point(n) → M
24. Point(q) → N
25. Semicircle(M, N) → s
26. Point(s) → O
27. PointIn(poly3) → U