Physics

Physics

1. Simple Harmonic Motion

   • EQUATIONS
     • These can be proved by using the reference circle
       • Starting at equilibrium posistion
         • y = A sinwt
           • y = displacement
         • v = Aw coswt
           • v = velocity
         • a = -Aw^2 sinwt
           • a = acceleration
       • Starting at maximum displacement
         • y = A coswt
         • v = -Aw^2 sinwt
         • a = -Aw^2 coswt
   • DEFINITIONS
     • Motion Repeats
     • Force is proportional to displacement, and in the opposite direction (as F = ma this is also true for acceleration)
     • a = -w^2y and as F = ma also F = -w^2y * m
     • NOT SHM if the force is not changing eg only force acting is gravity
   • PERIOD
     • The time for one oscillation (left to right and back again OR up, down and back up)
       • T = 2π √L/g
         • Pendulum
       • T = 2π √m/k
         • Spring
   • GRAPHS
   • RESONANCE
   • DAMPING
   • REFERENCE CIRCLE
   • MAXIMUMS
   • VECTORS
     • Pendulum

2. Rotational Motion

3. Translational and circular Motion

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