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Mechanical Properties Of Fluids

Question

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Are all the periodic motions oscillatory? Is the vice versa true?

Solution

All the periodic motions are not necessarily oscillatory.
For example, motion of planet around the sun is periodic. But the motion is not to and fro about a mean position. Hence, the motion of planet around the sun is not oscillatory.
All the oscillatory motions are periodic because oscillatory motion repeats after regular interval of time. Therefore vice versa is true.

Some More Questions From Mechanical Properties of Fluids Chapter

What is an oscillatory motion?

What is time period?

Define frequency.

What is the condition for motion to be simple harmonic motion?

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.

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