Final answer:
The minimum force of friction required to prevent the motorcycle from sliding off the road is approximately 256 N.
Step-by-step explanation:
To calculate the minimum force of friction required to prevent the motorcycle from sliding off the road, we need to consider the centripetal force acting on the motorcycle. The centripetal force is provided by the frictional force between the motorcycle's tires and the road surface.
Centripetal force = mass x (velocity^2 / radius)
Substituting the given values into the equation, we get:
Centripetal force = 131 kg x (14.3 m/s)^2 / 72.9 m = 256.37 N
Therefore, the minimum force of friction required to prevent the motorcycle from sliding off the road is approximately 256 N, which rounds to 256 N.