An angular impulse of 20 Nms is applied to a hollow cylinder of mass 2 kg and radius 20 cm - Physics - System Of Particles And Rotational Motion

Question

An angular impulse of 20 Nms is applied to a hollow cylinder of
mass 2 kg and radius 20 cm The change in its angular speed is?

Dinesh Pandey · Accepted Answer

Dear Student,

angular impulse, L=20 NmsMass, m=2 kgradius, r=20 cm=0
2 mL=Iωf-ωiwhere, I=moment of inertia=mr2ωf-ωi=change in angular speedL=mr2ωf-ωi20=2×0
22×ωf-ωiωf-ωi=202×0
04ωf-ωi=250 rad/s

An angular impulse of 20 Nms is applied to a hollow cylinder of mass 2 kg and radius 20 cm. The change in its angular speed is?