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  1. #include <iostream>
  2. #include <math.h>
  3. #define g 9.80665
  4.  
  5. using namespace std;
  6.  
  7.  
  8. float licz_k(float L, float m, float H){
  9.  
  10.     float k;
  11.  
  12.     k = (((m*g*L)+(m*g*H))*2) / pow(H, 2);
  13.  
  14.     return k;
  15. }
  16.  
  17. float licz_L_max(float L, float m, float V, float k){
  18.  
  19.     float W0, A;
  20.  
  21.     // czestosc kolowa drgan
  22.     W0 = sqrt(k/m);
  23.  
  24.     // ampituda drgan
  25.     A = V/W0;
  26.  
  27.     return A;
  28. }
  29.  
  30. int main()
  31. {
  32.     float L, m, T, V, k, H;
  33.     int menu;
  34.  
  35.     cout << "Podaj dlugosc liny: [m]" << endl;
  36.     cin >> L;
  37.     cout << "Podaj mase: [kg]" << endl;
  38.     cin >> m;
  39.  
  40.     cout << "---MENU---" << endl;
  41.     cout << "1. Oblicz k" << endl;
  42.     cout << "2. Oblicz maksymalne rozciągnięcie liny" << endl;
  43.     cin >> menu;
  44.  
  45.  
  46.     T = sqrt((2*L)/g);
  47.     V = g*T;
  48.  
  49.     switch(menu)
  50.     {
  51.         case 1: cout << "Podaj maksymalne rozciągnięcie liny [m]" << endl;
  52.                 cin >> H;
  53.                 cout << "K wynosi: " << licz_k(L, m, H) << "[N/m]" << endl;
  54.                 break;
  55.  
  56.         case 2: cout << "Podaj k [N/m] " << endl;
  57.                 cin >> k;
  58.                 cout << "Maksymalne rozciągnięcie liny wynosi: " << licz_L_max(L, m, V, k) << "[m]" << endl;
  59.                 break;
  60.  
  61.         default: cout << "Error" <<endl;
  62.     }
  63.  
  64.  
  65.     system("pause");
  66.  
  67.     return 0;
  68. }
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