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Figure 6 shows the path taken by a matatu travelling on horizontal ground (a winding road).

The speed of the matatu is constant. Identify with reason the point along the path which a load placed loosely on the rack(carrier) of the matatu is most likely to roll off.
(KCSE 2006 paper 1 question 10)

Answer Text:
At F, the radius of the curve is smallest and so the centripetal force required to keep the luggage carrier is high.