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Mechanical Properties of Fluids
Question
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What is the difference between epoch and phase?

Answer

Epoch is the initial phase of a particle and it remains constant all the time for a given motion.
Phase is the angular position of the particle on the circle which represents the given Simple Harmonic Motion.
Phase would increase continuously with time going up by 2π radians for every oscillation.

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Some More Questions From Mechanical Properties of Fluids Chapter

In the displacement equation y = r sin(ωt/ + ϕ) what does ϕ called and what information does it give?

What determines the natural frequency of an oscillator?

Is there any relation between uniform circular motion and simple harmonic motion?

What is periodic motion?

Write down the expression for the instantaneous velocity and acceleration of particle vibrating in simple harmonic motion.

How do you define the mean position of particle executing simple harmonic motion?

Define amplitude.

What is the net displacement of the particle executing simple harmonic motion in one complete oscillation?

Are all the periodic motions simple harmonic?