Part A A computer hard disk 8.0 cm in diameter is initially at rest. A small dot is painted on the edge of the disk. The disk accelerates at 520 rad/s? for s, then What is the speed of the dot at t = 1.0 s? coasts at a steady angular velocity for another = S. Express your answer to two significant figures and include the appropriate units. • View Available Hint(s) V = 10 m Submit Previous Answers Correct Part B Through how many revolutions has it turned? Express your answer using two significant figures. • View Available Hint(s) ? A8 = |161 rev Submit Previous Answers

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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.