The oscillations in the lossy medium
  The object of this laboratory work: to explore dependence mass point oscillatory motion parameters in the following cases:   - without resistance (free oscillations);   - the resistance force is proportional to the velocity vector;   - the resistance force is proportional to the velocity squared.   Used equipment: the work have doing on a personal computer. The oscillatory motion simulation is carried out by the numerical solution of system of differential equations. This equations describe a motion of a particle under an elastic force action and exterior forces (resistance force) with initial values and parameters being entered during the dialogue with the computer. 
K.B. Korotchenko (Chair of Theoretical and Experimental Physics, Tomsk   Polytechnical University, Rossia)