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January 26, 2015

January 26, 2015

Posted by **Anonymous** on Thursday, March 25, 2010 at 5:00pm.

- physics help please!!! -
**bobpursley**, Thursday, March 25, 2010 at 5:39pmchose your moment of Inertia model. I think solid disk is a good model. I= 1/2 mr^2

angMomentum= I*angvelocity

where w (angular velocity)=2PI*1200/60 rad /seconds

Torque=momentinertia*angularacceleration

= 1/2 m r^2 * change in angvelocity/time

= 1/2 m r^2 * (wf-wi)/5.7sec

wf=0 ; wi is 2PI*1200/60 rad/sec

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