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September 2, 2014

September 2, 2014

Posted by **Rod** on Saturday, November 8, 2008 at 7:27pm.

Calculate the tangential accleration at the rim. Given that the angular acceleration is -24.9 rad/s^2.

I know its aT = r alpha but how do I get the radius?

- physics -
**bobpursley**, Saturday, November 8, 2008 at 7:49pmThe intial velocity was 50rad/sec* radius. The acceleration is -24.9*r m/s^2

vf^2=vi^2 + 2a*d

0=2500r^2+ 2(-24.9)r*2PIr*8

solve for r.

check my thinking.

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