Practice Energy Considerations (3.4) - Harmonic Oscillators & Damping - Engineering Mechanics
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Energy Considerations

Practice - Energy Considerations

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define a damped harmonic oscillator in your own words.

💡 Hint: Think about how friction might affect a swinging pendulum.

Question 2 Easy

What does the damping ratio (γ) signify?

💡 Hint: Consider it a comparison of 'how damped' the system is.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

In a damped harmonic oscillator, what happens to energy over time?

It increases
It stays the same
It decreases

💡 Hint: Think about what happens to a swing slowing down.

Question 2

True or False: Resonance only occurs in mechanical systems.

True
False

💡 Hint: Consider other contexts where resonance might apply!

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

An underdamped system oscillates with a damping ratio of 0.2 and a natural frequency of 5 Hz. Calculate the frequency of oscillation as it decays in amplitude.

💡 Hint: Remember to calculate the damped frequency using the provided formula.

Challenge 2 Hard

If an external force of 10 N is applied to a damped oscillator whose mass is 2 kg, determine the driving frequency required for resonance if the damping ratio is 0.1.

💡 Hint: Use given data to find k using the restoring force relation and then apply the resonance condition.

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Reference links

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