3. A 900 kg car drives over a brige in the shape of a circular arc with radius 40 m. The car moves with a constant speed v along the circular bridge. a. In the middle of the bridge, what is the direction of the car’s acceleration? Explain. b. The normal force is the apparent weight of the car, that is, it’s what a scale would read if placed between the car and the road. What is the speed v required for the apparent weight of the car to be half of its actual weight?

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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.