A 0.80 kg ball , attached to the end of a horizontal cord , is rotated in a acircle of radius 2.0m on a frictionless horizontal surface , if the cord will break when the tension in it exceeds 80 N , what is the maximum speed the ball can have ?

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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.