Solve SHM Leaky Bucket: dT/dt Calculus Solution

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SUMMARY

The discussion focuses on solving the problem of how the period of a leaky bucket in vertical simple harmonic motion (SHM) changes over time. The relevant parameters include a mass loss rate of dm/dt = 2 g/s, a bucket mass of 2 kg, total water mass of 10 kg, and a spring constant k = 125 N/m. The derived formula for the rate of change of the period is dT/dt = 2π * sqrt((dm/dt)/k), which requires careful application of calculus, specifically the chain rule and proper unit conversions.

PREREQUISITES
  • Understanding of simple harmonic motion (SHM) principles
  • Familiarity with calculus, particularly derivatives and the chain rule
  • Knowledge of unit conversions, specifically between grams and kilograms
  • Basic physics concepts related to mass, spring constants, and oscillation periods
NEXT STEPS
  • Review the application of the chain rule in calculus
  • Study the derivation of the period formula for simple harmonic oscillators
  • Learn about unit conversions in physics, particularly mass units
  • Explore advanced topics in SHM, including damping effects and energy conservation
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Students studying physics, particularly those focusing on mechanics and oscillations, as well as educators looking for examples of calculus applications in physical systems.

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Homework Statement


There is a bucket with a leak in it in vertical SHM. What is the rate that the period changes with time?
dm/dt = 2 g/s
bucket = 2 kg
total water = 10kg
starting amplitude = 3cm
k=125 N/m

Homework Equations


T=2pi*sqrt(m/k)

The Attempt at a Solution



dT/dt = 2pi * sqrt((dm/dt)/k)
dT/dt = 2pi * (dm/dt)^1/2 / k^(1/2)
dT/dt = 2pi * (m/2)^-1/2 / k^1/2
dT/dt = 2pi * (m2k)^-1/2

my calculus isn't the sharpest so I probably screwed up taking the derivative?
 
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Yeah, I think you did. Take a look at the first line again. You clearly know ##\sqrt{A}=A^{\frac{1}{2}}##, so perhaps make that conversion for ##T## before taking the derivative. Also, you will need the chain rule for this problem.
 
PsychonautQQ said:

dm/dt = 2 g/s


What does this mean? Units have to be kg/s, not g/s.
 

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