∣L |or L=Iω (about axis of rI=Irod​+mx2=Irod​+mv2t2Here, m= mass of insect∴L=(Irod​+mv2t2)ωNow ∣τ∣=dtdL​=(2mv2tω) or ∣τ∣∝t i.e. the graph is a straight line passing through the origin.After time T,L= constant∴∣τ∣ or dtdL​=0Maximum friction acting at the bottommost point will convert backward slip into pure rolling. The torque of this friction about the bottommost point is zero.∴ From the conservation of angular momentum about bottom most pointv​mr2ω0​=mvc​r⊥​+Ic​ω=mvr+mr2×v/r=2ω0​r​​