Further Mechanics

Cards (7)

  • What is angular displacement?
    The angle something rotates through about a fixed point. (Δθ)
  • Arc length is equal to...
    radius x angular displacement (Δs=rΔθ)
  • What is angular speed, ?
    Rate of change of rotation, rate of change of angular displacement.
  • For a full cycle, ω is equal to
    change in angular displacement divided by change in time
  • For a full cycle, ω is equal to
    2π/T
    where T is the time period
    or
    2πf
    where f is the frequency
  • Do objects in circular motion have the same linear and angular speed?
    No.
  • Linear speed, v, is equal to
    • the change in displacement divided by time (v=s/t)
    • [radius x change in angle] divided by time (v=rΔθ/t)
    • radius x angular speed (v=r)