Solve Spring Mass Problem: Get Help Now!

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SUMMARY

The discussion revolves around solving the Spring Mass Problem using differential equations. The user seeks clarification on the terms r(t) and f in the equation, specifically how they relate to the friction force and gravitational pull acting on the system. It is established that f represents the friction force, while r(t) denotes the gravitational force. Understanding these components is crucial for accurately modeling the system's behavior.

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Homework Statement




Hi PF frens,
I've got the attached picture translated into differential equation representation.
However, not so sure how the r(t) and f multiply dee-y / dee-t comes about.
Kindly advise?

Homework Equations





The Attempt at a Solution



see attached jpeg.
 

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  • Spring-Mass.JPG
    Spring-Mass.JPG
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Hi there,

From what I can see, the f \frac{dy}{dt} seems to be the friction force applied on the system. I would guess r(t) the simple gravitational pull, but I might be mistaking.

Cheers
 

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