IB Physics SL A 2 24 Centripetal Force Questions

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

Exam points

Determine centripetal force as the resultant inward force perpendicular to the instantaneous velocity.
Calculate centripetal force using F = mv²/r or F = mω²r and identify the physical force providing it from complete evidence.

[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 IB Physics SL A 2 24 Centripetal Force Questions 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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IB Physics SL A 2 24 Centripetal Force Questions question 1