A Problem on Simple Harmonic Oscillations

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SUMMARY

The discussion focuses on the behavior of water in a 'U' shaped tube when disturbed, specifically analyzing whether the resulting motion is simple harmonic. The acceleration of the water is defined by the equation \( a = \frac{g}{h}y \), where \( g \) is the acceleration due to gravity and \( h \) is the height of the water column. The time period \( T \) of the oscillation is given by \( T = 2\pi \sqrt{\frac{h}{g}} \), confirming that the motion is indeed simple harmonic under the specified conditions. Newton's second law is suggested as a foundational principle to derive the equation of motion for the water.

PREREQUISITES
  • Understanding of simple harmonic motion principles
  • Familiarity with Newton's second law of motion
  • Basic knowledge of fluid dynamics
  • Mathematical skills for manipulating equations
NEXT STEPS
  • Study the derivation of simple harmonic motion equations
  • Explore applications of Newton's second law in fluid mechanics
  • Investigate the effects of varying water heights in oscillatory systems
  • Learn about the characteristics of oscillations in different fluid systems
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Students of physics, educators teaching mechanics, and anyone interested in the dynamics of fluid oscillations will benefit from this discussion.

Hareesh
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A 'U' shaped tube is partially filled with water. If the water inside it is disturbed from one end does it begins to move up and down. Does this motion is simple harmonic.
Accelaration = force/mass = (g/h)y
Time period T = 2pi/w
w=(g/h)^-1/2
 
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Hareesh said:
Accelaration = force/mass = (g/h)y
Time period T = 2pi/w
w=(g/h)^-1/2

Hi Hareesh! :smile:

I don't understand what you've done here. :confused:

Hint: for this sort of problem, the first thing to do is to find the equation of motion …

in this case, use Newton's second law F = ma to relate the forces on the water to its position. :wink:

(assume that the water more than fills the 'U', so the surface is in the two straight parts of the tube)
 

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