following a collision in outer space, a copper disk at 850C is rotating about its axis with angular speed of 25 rad/s. As the disk radiates infrared light, its temperstute falls to 20c. No external torque acts on disk.

Question

anonymous · Answer

does tha angular speed change as the disk cools, why?
if not same, whats its new angular speed at the lower temperature

anonymous · Answer

@AravindG

anonymous · Answer

@wolfe8

amonoconnor · Answer

To be honest, I have no idea, but I know of a super credible physics teacher on OS... if he's online, I'll send him your way:)

anonymous · Answer

WELL IF COPPER DISC COOLS THEN RADIUS DECREASES AND SO DOES MOMENT OF INERTIA AND AS NO EXTERNAL TORQUE ACTS.WE CAN USE CONSERVATION OF ANGULAR MOMENTUM TO SOLVE..