Practice Mass Distribution (14.6.1) - Natural Frequencies - Earthquake Engineering - Vol 1

Practice: Mass Distribution

Lesson 14.6.1Natural Frequencies

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9 questions

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Exercise
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6 sample questions

Question 1.
What happens to the natural frequency if we add mass to a structure?
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Think about the relationship described in the section.
Question 2.
Define resonance in your own words.
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It relates to the vibrations experienced by structures.
3Question 3.
What effect does adding mass to a structure have on its natural frequency?
- Increases frequency
- Decreases frequency
- No effect
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Remember the formula for natural frequency.
4Question 4.
True or False: Uneven mass distribution can lead to regular modal responses.
- True
- False
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Think about how mass is arranged in a structure.
Question 5.
A newly designed building has a mass that is unevenly distributed. Describe how this affects its performance during an earthquake.
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Consider the effects of uneven distribution.
Question 6.
Calculate the change in natural frequency for a structure if its mass increases from 2000 kg to 2400 kg, assuming the stiffness remains constant and initially the natural frequency is 2 Hz.
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Use the formula for natural frequency: f = 1/(2π)√(k/m).

5 more questions in this section. Enroll free to practise them all.