The blade of a windshield wiper moves through an angle of 90.0° in 0.414 s. The tip of the blade moves on the arc of a circle that has a radius of 0.363 m. What is the magnitude of the centripetal acceleration of the tip of the blade? Number eTextbook and Media Units

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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.