7.9 - Effect of Mass and Stiffness
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Practice Questions
Test your understanding with targeted questions
What happens to the natural frequency if mass is increased?
💡 Hint: Remember the inverse relationship.
How does increasing stiffness affect vibration speed?
💡 Hint: Recall the acronym discussed in class.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What effect does increasing mass have on natural frequency?
💡 Hint: Recall the relationship we discussed.
True or False: Increasing stiffness leads to a decrease in natural frequency.
💡 Hint: Think about the impact of stiffness.
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Challenge Problems
Push your limits with advanced challenges
A suspension bridge has a mass of 2000 kg and a stiffness of 12000 N/m. Calculate its natural frequency.
💡 Hint: Use the formula for natural frequency.
A designer needs to increase the stiffness of a structure to ensure it vibrates at a different frequency. If the current stiffness is 5000 N/m and mass remains constant at 1000 kg, what stiffness would achieve a natural frequency of 3 rad/s?
💡 Hint: Rearrange the formula accordingly.
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