Section 5.1 - Further Mechanics Exam Questions Flashcards

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1
Q

Explain the differences between two graphs showing the amplitude and frequency for two springs where one has a greater spring constant (4)

A

Resonance peak at higher frequency due to higher spring constant
Resonant peak broader due to damping (for higher k)

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2
Q

State the conditions for simple harmonic motion (2)

A

Acceleration is proportional to displacement

Acceleration acts in the opposite direction to displacement

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3
Q

Sand is placed on a surface oscillating up and down, explain why above a certain frequency, the sand loses contact with the surface (3)

A

When the vibrating surface accelerates down with an acceleration less than g, the sand stays in contact
Above a particular frequency, the acceleration is greater than g
There is no contact force on the sand

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