Pseudo Force — Rotating FrameHardQuestion 30650
Question
In a rotating frame (angular velocity ω), a stationary object (in the lab frame) appears to move with centrifugal force mω²r and Coriolis force:
- A2m(v × ω)
- B2m(ω × v)Correct
- Cmω × v
- Dmω²v
Correct answer
2m(ω × v)
Explanation
Coriolis force = 2m(v' × ω) where v' is the velocity in the rotating frame. For a stationary object in lab frame moving with −ωr velocity in rotating frame, F_Cor = 2m(v'×ω).