look net work done by the friction is zero in case of accelerated pure rolling,two things,translational work due to friction and rotational work due to friction add up to zero
for e.g if friction acts backward with c.o.m translating forward,it does negative work corresponding to translation and the torque due to friction does positive work and the net becomes zero
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[F.ds -FRd ]
=0 since v=r w or ds = rd