Little help in mass on a spring

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Homework Help Overview

The problem involves a steel spring that extends by 10 cm when a 100 g weight is attached. The original poster seeks to determine the period of oscillation using the harmonic oscillator equation.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to relate the forces acting on the spring using F = ma and F = -kx, questioning the value of acceleration in this context.
  • Some participants suggest using Hooke's law to find the spring constant and inquire about the force exerted by the hanging mass.
  • There is a discussion about the relationship between gravitational force and spring force, with one participant questioning if mg = -kx is correct.

Discussion Status

The discussion is active with participants exploring the relationship between the forces involved and confirming the use of Hooke's law to find the spring constant. There is no explicit consensus yet, but guidance has been offered regarding the application of the relevant equations.

Contextual Notes

Participants are navigating the assumptions related to gravitational acceleration and the setup of the problem, with some uncertainty about the values to use in their calculations.

Akibarika
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Homework Statement


a steel spring that it extends by 10cm in equilibrium when you attach the upper end of the spring to a fixed support and hang a weight of 100g at the lower end.

I want to know how to use the equation for the harmonic oscillator to determine the period of the up and down oscillation.


Homework Equations


F = -kx
F = ma

The Attempt at a Solution


I want to use F = ma and F = -kx
so ma = -kx
k = ma/-x
= 0.1*a/-0.1
= -a

but I don't know the a, is the a for 9.81? and maybe I was wrong in the beginning

Thanks a lot
 
Physics news on Phys.org
Use Hooke's law (F = -kx) to find the spring constant. What force is exerted on the spring by the hanging mass?
 
so I can use F = mg
=> mg = -kx ?

is that right?
 
Yes, that's how you can find the spring constant.
 
thank you very much! cheers
 

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