Further Mechanics Flashcards
Two conditions for SHM
The acceleration is proportional to the displacement
The acceleration is in the opposite direction to the displacement
How does velocity act in circular motion
As a tangent to the circle
Where does the centripetal force/acceleration act
Towards the centre of the circle, perpendicular to the velocity
What shape is a displacement time graph for SHM
cos x
What shape is a velocity time graph for SHM
-sin x
What shape is a acceleration time graph for SHM
-cos x
What is independent from each other in SHM
Frequency and period are independent of amplitude
What does a fiducial marker do and explain why it is placed where it is
Helps reader take markings easier
Placed at the point where there is the highest velocity meaning the bob will take less time passing through it
What is resonance
Driving frequency = resonant frequency
Vibrates with a rapidly increasing amplitude
Describe graph of light damping
Amplitude decreases gradually over time
Describe graph of heavy damping
Amplitude decreases drastically over time
Describe graph of critical damping
Amplitude is decreased to zero in Avery short amount of time
Describe graph of over damping
Steady decrease in amplitude until zero
