19. A weight on a spring stiffness k varies in the liquid, the frequency of its oscillations ω half the natural frequency ω0 CW weight on the same spring. The coefficients of the spring stiffness k increased 7 times. How many times it is necessary to increase the viscous friction coefficient of the liquid to the period of oscillation of the sinker has not changed

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)