Circular Motion Definitions

Question 1

Angular Velocity

Answer 1

Angle an object rotates through per sec

Rads^-1

Question 2

Centripetal Force

Answer 2

Circular motion caused by constant net force perpendicular to velocity

Question 3

Simple Harmonic Motion

Answer 3

Acceleration of oscillating object is directly proportional to displacement from midpoint and acts in opposite direction to displacement

Question 4

Resonance

Answer 4

Driver frequency = natural frequency

Increasing amplitude

Question 5

Damping

Answer 5

Oscillating system loses energy to decrease displacement and reduce effect of resonance/stop oscillation

Critical damping- reduce A to 0 in shortest time possible

Overdamping- system takes longer to reduce A to 0

Question 6

Time period of SHM

Answer 6

Pendulum:
2 x pi x sqr root (length/g)

Spring:
2 x pi x sqr root (mass/spring constant)