24) d) -3.06 rad/s^2
alfa = (wf-wi)/t
= (0 - 15.3)/5
= -3.06 rad/s^2
25) e) 0.36 kg.m^2
I = M*R^2
= 2.25*0.4^2
= 0.36 kg.m^2
26) d)42.13 J
KEi = 0.5*I*wi^2
= 0.5*0.36*15.3^2
= 42.13 J
27) a) 1.01 N.m
Apply, |T| = I*alfa
==> T = 0.36*3.06
= 1.1016 N.m
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