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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define modal mass in the context of structural dynamics.
💡 Hint: Focus on its role in dynamic analysis.
Question 2
Easy
What is modal stiffness?
💡 Hint: Connect its definition to modal mass and frequency.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What does modal mass represent?
- The total mass of the structure
- Mass associated with a specific mode
- The weight of the foundation
💡 Hint: Think about the participation of mass in vibration.
Question 2
True or False: Modal stiffness is independent of circular frequency.
- True
- False
💡 Hint: Review how stiffness is defined.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A structure has a mass of 200 kg and its first mode frequency is 10 rad/s. Calculate the modal stiffness and explain its significance.
💡 Hint: Focus on how frequency plays into the stiffness equation.
Question 2
In a multi-story building, if the modal mass of the first mode is 150 tons and the modal stiffness is calculated to be 2500 kN/m, discuss how these values impact the building's seismic design.
💡 Hint: Consider how higher modal mass might affect design criteria.
Challenge and get performance evaluation