Physics Help Forum Another question! Angular acceleration! Torque! HELP!

 Nov 24th 2008, 07:05 AM #2 Senior Member     Join Date: Apr 2008 Posts: 815 For a) use the relation $\displaystyle \vec \alpha= \frac{\Delta \vec \omega}{\Delta t}$. For b), you know that the torque is worth $\displaystyle \vec r \wedge \vec F$. For c) check out your notes or wikipedia. For d)$\displaystyle L_i=I_G \omega _i$. For e) $\displaystyle E_f=\frac{I_G \omega _f^2}{2}$. __________________ Isaac If the problem is too hard just let the Universe solve it.