5. Sean spins a ball in a horizontal circle on a weigh-less string. Justin has a similar ballbut wants to spin his slower. What could Justin do to make it harder to start spinningthe mass from rest?a. make the string longerb. use a lighter ballc. spin the ball closer to the groundd. make the string shorter6. A fan initially rotates clockwise at 9.0 rad/s, but has a counterclockwise angularacceleration of 3.0 rad/s? and reaches a counterclockwise angular speed of 27 rad/s.How much time did this change in the angular velocity take?a. -9 sb. -12 sC. 9 sd. 12 s

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