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CAIE
12. Motion in a circle
12.1 Kinematics of uniform circular motion
- define the radian and express angular displacement in radians
- understand and use the concept of angular speed
- recall and use ω = 2π/ T and v = rω
12.2 Centripetal acceleration
- understand that a force of constant magnitude that is always perpendicular to the direction of motion causes centripetal acceleration
- understand that centripetal acceleration causes circular motion with a constant angular speed
- recall and use a = rω2 and a = v 2 /r
- recall and use F = mrω2 and F = mv2 /r