Practice Natural Frequencies and Mode Shapes - 12.3 | 12. Two Degree of Freedom System | Earthquake Engineering - Vol 1
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a natural frequency?

💡 Hint: Think about the default rhythm of a system.

Question 2

Easy

Define mode shape.

💡 Hint: Consider it as how different parts of a system move together.

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 is the eigenvalue problem formed from the motion equation?

  • K - ω²M = 0
  • det(K - ω²M) = 0
  • M - K = 0

💡 Hint: Look for the determinant condition.

Question 2

Natural frequencies directly relate to which concept?

  • True
  • False

💡 Hint: Think about how vibrations are influenced.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Consider a 2-DOF system defined with masses M1 and M2, find the natural frequencies if the stiffness matrix is given as K = [[30000, -10000], [-10000, 30000]].

💡 Hint: Start by calculating the determinant for potential ω values.

Question 2

Discuss how changing the stiffness of one mass affects the mode shapes of this 2-DOF system.

💡 Hint: Consider how frequency shifts impact vibration patterns.

Challenge and get performance evaluation