Question

what is the best way to minimize the effect of centrifugal force in a turn?
stop suddenly before entering the turn
speed up when approaching the turn.
make the turn as sharply as possible.
make the turn slowly.

Explanation:

Centrifugal force \( F = \frac{mv^{2}}{r} \) (where \( m \) is mass, \( v \) is velocity, \( r \) is radius of the turn). Slowing down (\( v \) decreases) reduces \( F \). Stopping suddenly is dangerous and not related to minimizing centrifugal force in a turn. Speeding up (\( v \) increases) would increase \( F \). A sharper turn (\( r \) decreases) would increase \( F \) (since \( F\propto\frac{1}{r}\) for a given \( v \)).

Answer:

Make the turn slowly.