IB Physics SL A.2.24 Circular Motion Dynamics

Practise applying centripetal-force equations to orbital motion, vertical circles, loops, banked roads and rotating systems.

Exam points

Apply centripetal-force equations to orbital and vertical circular motion.
Analyse tension, normal force and friction in loops, banks and rotating systems.

[Maximum number: 1]

This question is in two parts. Part 1 is about two children on a merry-go-round. Part 2 is about electric circuits.

Part 1 Two children on a merry-go-round
Aibhe and Euan are sitting on opposite sides of a merry-go-round, which is rotating at constant speed around a fixed centre. The diagram below shows the view from above.

Figure for Question A.2.24—Centripetal force question 1 — IB Physics SL

Aibhe is moving at speed $1.0 \mathrm{~ms}^{-1}$ relative to the ground.

Identify the force that is causing Aibhe to move in a circle.

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A.2.24—Centripetal force question 1