txtension Requests, Print Assignment Question 1 2 3 4 5 6 7 8 10111213 For his a

Question

txtension Requests, Print Assignment Question 1 2 3 4 5 6 7 8 10111213 For his assignment, you submit answers by question parts The number of submissions nemaining lor each quession part only changes you submit or change the answer Chapters 9 and 10. Momentum and the start of rotation Your last submission is used for your score -12 points SerPSE9 10.P.002 soin. A potter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 26 s Ask Your (a) Find its angular acceleration in radians per second per second rad/s2 (b) Would doubling the angular acceleration during the given period have doubled final angular speed? O Yes O No Need Help? .enen Submit Answer Save Progress Practice Another Version

Explanation / Answer

Given, w = 0.20 rev/s = (0.20*2*3.141) rad/s = 1.256 rad/s

t = 26 s

use the expression -

w = w0 + alpha*t

=> 1.256 = 0 + alpha*26

=> alpha = 1.256/26 = 0.048 rad/s^2

(b) Yes. Because the wheel starts from rest and so final velocity is directly proportional to the acceleration.

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