If moment of inertia decreases by a factor of 1.5, how does this affect kinetic energy? Increase or decrease? And by how much?
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Angular KE = 1/2 Iw^2; where I is the moment of inertia. As you can plainly see if i = I/1.5, that means the ke = KE/1.5 as well. It decreases by 1/1.5 factor. ANS.