4.4 Simple Harmonic Motion

Question 1

Simple harmonic motion

Answer 1

• a=-w2t
  The acceleration is directly proportional to the displacement and is always directed towards the fixed position.

Question 2

Damping

Answer 2

Resistive force which opposes motion and so causes the amplitude decrease

Question 3

Resonance

Answer 3

A vibrating system (or external force) drives another, to oscillate with greater amplitude at specific frequencies

Question 4

Free vibrations

Answer 4

No energy is transferred to or from the system,
thus amplitude remains fixed

Question 5

Forced Vibrations

Answer 5

Forced to oscillate at the frequency of an external oscillator ( giving it energy )

Question 6

Forced Vibrations

Answer 6

Forced to oscillate at the frequency of an external oscillator ( giving it energy )