The so-called centrifugal force experienced by a passenger on a turning bus is
Correct answer: C. an apparent force arising because the passenger is in a rotating, non inertial frame
- A. a real force acting outwards on the passenger
- B. the reaction to the passenger's weight
- C. an apparent force arising because the passenger is in a rotating, non inertial frame
- D. always larger than the centripetal force
Explanation
In the ground frame the passenger simply continues in a straight line by inertia while the bus turns beneath them, so no outward force is needed to explain the motion. The outward push is felt only because the observer is accelerating with the bus, which makes it a fictitious or pseudo force. The genuine force in the situation is the inward one supplied by the seat and the floor.
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About Angular Velocity
Angular velocity describes how quickly angular displacement changes with time, with ω = Δθ/Δt and units of radians per second. Questions relate angular and linear motion through v = rω, use the direction given by the right hand rule, and distinguish angular velocity from angular acceleration and ordinary frequency.
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