Angular Speed

• What is angular speed defined as?

  Rate of change in angular displacement

  
• Why does an object in uniform circular motion have changing velocity?

  Because it is constantly changing direction
• What is the unit of angular speed?

  rad s^-1
• How can angular speed be calculated?

  Using change in angular displacement over time

  
• What is the angular displacement of a complete cycle?

  2π radians
• What is the relationship between linear speed, radius, and time period in circular motion?

  v = rω, where ω is angular speed

  
• How does angular velocity differ from angular speed?

  Angular velocity is a vector quantity
• What does a greater rotation angle θ in a given time indicate about angular velocity?

  It indicates a greater angular velocity ω

  
• How does the radius of rotation affect angular velocity?

  A larger radius results in smaller angular velocity
• How to calculate the linear speed and frequency of an object in circular motion?

  • Linear speed (v) = rω
  • Frequency (f) = ω / 2π

  
• If a bird flies in a circle with an angular speed of 5.25 rad s^-1 and a radius of 650 m, what is the linear speed?

  Linear speed = 5.25 * 650
• How to find the frequency of a bird flying in a complete circle?

  Frequency = angular speed / 2π
• What is the formula for angular speed in terms of linear speed and radius?

  ω = v / r

  
• What is the formula for frequency in terms of angular speed?

  f = ω / 2π