Suppose a truck is (still!) going around a roundabout somewhere in Wisconsin. The roundabout has a radius of 15m and the truck is moving at 10 m/s. a) How long does it take for the truck to go around once? b) What is the angular velocity of the truck? Suddenly the driver hits the brakes and the truck starts slowing with a linear acceleration of -1.2m/s2. c) What is the truck’s angular acceleration? d) What is the total linear acceleration of the truck?

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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.