23. A highway has a flat section with a tight level curve of radius 40 m. If the coefficient of static friction between tires and pavement surface is 0.45, what is the maximum speed v at which the car of mass m can negotiate the curve safely – in other words, without the tires slipping? (Hint: the friction force between tires and pavement = coefficient of static friction times normal force) *use g=9.8   a. 18 m/s b. 23 m/s c. 15 m/s d. 13 m/s e. 10 m/s

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.