Solve Mass & Energy Homework: Find Max Stretch & Amplitude

  • Thread starter Thread starter Quantum Fizzics
  • Start date Start date
  • Tags Tags
    Energy Springs
Click For Summary

Homework Help Overview

The discussion revolves around a physics problem involving a mass attached to a vertical spring. The original poster is attempting to calculate the maximum stretch of the spring and the amplitude of vibration after the mass is released. The problem involves concepts of gravitational potential energy, elastic potential energy, and kinetic energy.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants discuss the application of conservation of energy principles and the role of Newton's second law in oscillatory motion. There is uncertainty about how to approach the calculation of maximum stretch and whether it relates to equilibrium or oscillation dynamics.

Discussion Status

Some participants have provided guidance on using energy conservation principles and have prompted the original poster to clarify their understanding of the relationship between gravitational potential energy and spring potential energy. There is an ongoing exploration of the concepts involved, with no clear consensus yet.

Contextual Notes

The original poster has indicated they have all the necessary numerical values but are struggling with the conceptual framework needed to solve part a) of the problem. There is also a mention of oscillation dynamics, which may complicate the interpretation of the maximum stretch.

Quantum Fizzics
Messages
22
Reaction score
0

Homework Statement


Hello, I'm having an issue with a question I have all the numbers and everything but I can't quite get the answer correctly and its very frustrating..

A mass, m is held at UEP of a vertical spring constant k & allowed to fall. Calculate:
a) The maximum stretch(max bottom)
b) The amplitude of vibration

Homework Equations


PEg + PEe + KE= PEg' +PEe'+ KE'
h = xo = mg/k

The Attempt at a Solution


I've solved the amplitude of vibration already I am just stuck at part a) I really do not know how start please help thanks
 
Physics news on Phys.org
You've quoted the right equations - just fill in the blanks: in terms of the desired unknown, what are the loss in gravitational PE, the gain in spring PE, and the change in KE?
 
about maximum stretch
I'm not sure but I think I think that depends on the spring ,,
If it is in equilibrium after falling we will use the laws of conservation of energy ,
If it is not "say it is oscillating" we shall use Newton second law , because in oscillation , we can't specify the final and initial positions of the string [it would go back farther than it's initial position when it's allowed to fall]

I'm I right ??
 
Maged Saeed said:
about maximum stretch
I'm not sure but I think I think that depends on the spring ,,
If it is in equilibrium after falling we will use the laws of conservation of energy ,
If it is not "say it is oscillating" we shall use Newton second law , because in oscillation , we can't specify the final and initial positions of the string [it would go back farther than it's initial position when it's allowed to fall]

I'm I right ??
No, it's not the stretch at equilibrium we want, it's the maximum stretch, and that occurs once in each oscillation.
 

Similar threads

  • · Replies 20 ·
Replies
20
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
3
Views
1K
Replies
17
Views
3K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 58 ·
2
Replies
58
Views
3K
Replies
24
Views
4K
Replies
12
Views
2K
Replies
8
Views
6K
Replies
22
Views
4K