[填空题]
A centrifuge in a medical h30txyf1wa 4t laborato 8h1g/5t,mle2vjo3jw la duz,h+oap9ry rotates at a rotational speed of 3600 rev/min. When switched off, it rotates 50.0 d t3hm w ,a25oj,e/zhl9pj+ govl1ua8times at a constant angular acceleration before coming to rest. (a) Determine the initial angular speed of the centrifuge. $rad/s$ (b) Determine the angle (in radians) through which the centrifuge rotates before coming to rest. $rad$ (c) Calculate the constant angular acceleration of the centrifuge. $rad/s^2$ (d) Calculate the time necessary for the centrifuge to come to rest. $s$