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12. Motion in a circle

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  1. 12.1 Kinematics of uniform circular motion

    1. 12.1.1The radian and express angular displacement in radians

      • define the radian and express angular displacement in radians

    2. 12.1.2The concept of angular speed

      • understand and use the concept of angular speed

    3. 12.1.3Ω = 2π / T and v = rω

      • recall and use ω = 2π / T and v = rω

  2. 12.2 Centripetal acceleration

    1. 12.2.1A force of constant magnitude that is always perpendicular to the direction

      • understand that a force of constant magnitude that is always perpendicular to the direction of motion causes centripetal acceleration

    2. 12.2.2Centripetal acceleration causes circular motion with a constant angular

      • understand that centripetal acceleration causes circular motion with a constant angular speed

    3. 12.2.3A = rω2 and a = v2 / r

      • recall and use a = rω2 and a = v2 / r

    4. 12.2.4F = mrω2 and F = mv2 / r

      • recall and use F = mrω2 and F = mv2 / r