Only need help with 7 and 8 please! rquestions 7.8, &9 using the given figure. A

Question

Only need help with 7 and 8 please!

rquestions 7.8, &9 using the given figure. A solid disk with a radius R rotates at a constant rate angular speed, o. 7. Which of the following points has the greatest angular speed? 8. Which of the following points has the greatest linear speed? 9. Consider points A and C on the disk. Point A is three times as far from the axis as point C. If the speed of point (A) A (B) B (C)C (D) D (E) All points have the same angular speed (a) A (b) B (C) C (D) D (e) All points have the same linear speed v, then what is the speed of point A? (A) v (B) 9v (C) v /3 (D) 3v

Explanation / Answer

7. E) all points have same angular speeds
angular speed of all point is same in a soid object
8. A points far from center have more linear speed speed = angular speed x distance  

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