Use vibration to calculate mass in space

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    Mass Space Vibration
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Discussion Overview

The discussion revolves around calculating the mass of an astronaut in space using the principles of simple harmonic motion, specifically through the vibrations of a chair attached to a spring. Participants explore methods to derive the mass based on given parameters such as spring constant, amplitude of vibration, and speed at equilibrium.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant describes a scenario involving an astronaut on a vibrating chair and provides specific parameters such as spring constant and amplitude.
  • Another participant questions the relevance of the astronaut's gender in the context of the problem.
  • Some participants express uncertainty about how to approach the problem, indicating a lack of familiarity with the concepts involved.
  • A participant suggests writing the equation of motion for simple harmonic motion and using the known conditions to find the mass of the chair and occupant.
  • Repeated expressions of confusion about where to start indicate a need for clarification on the topic.

Areas of Agreement / Disagreement

Participants generally express uncertainty about the problem and its approach, with no consensus on how to proceed or resolve the calculations involved.

Contextual Notes

Some participants have not articulated their understanding of simple harmonic motion, and there are unresolved questions about the application of the equations of motion to the scenario presented.

Who May Find This Useful

This discussion may be useful for individuals interested in the application of physics concepts related to simple harmonic motion, particularly in non-Earth environments, as well as those seeking to understand problem-solving approaches in physics education.

pchase0
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an astronaut in space sits on a chair that vibrates horizontally at the end of a spring. the spring has a 1200-N/m spring constant, the amplitude of vibration is 0.50 m and the speed of the chair as it passes through equilibrium is 2.0 m/s.
also devise another method to determine the mass, you know the spring constant of the spring-seat (1200-N/m) and the mass of the vibrating seat on which she sits. you also have a stop watch. describe the method and do a sample calculation
 
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so what have you done? Don't know any girl astronauts?
 
Dr.D said:
so what have you done? Don't know any girl astronauts?
i don't know how to approach either
 
Forget the girl, what do you know about simple harmonic motion?

You have a mass vibrating on the end of a spring, where you know the spring constant, the amplitude of vibration, and the speed when the chair passes through equilibrium. Write the equation of motion and the general solution, then express each of the known conditions in terms of the general solution, and see if you can find the mass of the chair and occupant (male or female) from what results.
 
Dr.D said:
Forget the girl, what do you know about simple harmonic motion?

You have a mass vibrating on the end of a spring, where you know the spring constant, the amplitude of vibration, and the speed when the chair passes through equilibrium. Write the equation of motion and the general solution, then express each of the known conditions in terms of the general solution, and see if you can find the mass of the chair and occupant (male or female) from what results.

im still lost on where to even begin
 

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