Solve Oscillation Problem: Find C Value to Avoid Oscillations

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SUMMARY

The discussion focuses on determining the critical damping coefficient (C) necessary to prevent oscillations in a mass-spring system submerged in a viscous liquid. The damping ratio (dr) is defined as dr = C / (2 * sqrt(k * m)), where k is the spring constant and m is the mass. For no oscillation to occur, the condition C must satisfy is C >= sqrt(4mk). This conclusion is confirmed as correct based on the provided reasoning.

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Homework Statement



A spring (which tension is k) is connected with a body (which mass is m). The whole system is in viscous liquid. In this liquid frictional force is proportional to speed: F = -C*v. With what C value the oscillation won't happen?


The Attempt at a Solution



The damping ratio is defined as dr = c / (2 * sqrt(k * m)). No oscillation will happen when there is critical damping dr = 1 or when there is overdamping dr > 1.

So: C >= sqrt(4mk);

Is the solution above right?
 
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The reasoning is correct, but I haven't checked your formulae.
 

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