Posted by Emma on Monday, March 12, 2012 at 4:20pm.
This isn't my work, so no credit goes to me. Also, we're probably in the same class.
"Remember that a = αR, or α = a/R
Solve for acceleration by using vf2=vi2+2ax (vf=2.2, vi=0, x=(answer in part b))
That gives you the linear a… we want angular acceleration so we just divide our linear acceleration by the radius:
((2.1)^2)/(2*0.5*(2.1^2)*(3.3+(.5*15))/(3.3*9.8))/0.25
= 11.978"
No, we probably aren't in the same class. I take that back. However, my answer should still be right. It should be in rad/s^2 though: 11.978 rad/s^2
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