What is a gear. Please give detailed explanation
2 answers:
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Answer:
1) 341 Hz
Explanation:
When a string vibrates, it can vibrate with different frequencies, corresponding to different modes of oscillations.
The fundamental frequency is the lowest possible frequency at which the string can vibrate: this occurs when the string oscillate in one segment only.
If the string oscillates in n segments, we say that it is the n-th mode of vibration, or n-th harmonic.
The frequency of the n-th harmonic is given by
where
n is the number of the harmonic
is the fundamental frequency
Here we have:
is the frequency of the 3rd harmonic
So the fundamental frequency is
And so, the frequency of the 2nd harmonic is:
Complete Question
The complete question is shown on the first uploaded image
Answer:
Explanation:
From the question we are told
The amplitude of the lateral force is
The frequency is
The mass of the bridge per unit length is
The length of the central span is
The oscillation amplitude of the section considered at the time considered is
The time taken for the undriven oscillation to decay to of its original value is t = 6T
Generally the mass of the section considered is mathematically represented as
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Generally the oscillation amplitude of the section after a time period t is mathematically represented as
Here b is the damping constant and the is the amplitude of the section when it was undriven
So from the question
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Generally the amplitude of the section considered is mathematically represented as
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