(Solved): (a) Calculate the angular momentum (in kgm2/s ) of an ice skater spinning at 6.00rev/s given his ...

(a) Calculate the angular momentum (in $$\mathrm{kg}?{\mathrm{m}}^2/\mathrm{s}$$ ) of an ice skater spinning at $$6.00\mathrm{rev}/\mathrm{s}$$ given his moment of inertia is $$0.470\mathrm{kg}?{\mathrm{m}}^2$$. $$\mathrm{kg}?{\mathrm{m}}^2/\mathrm{s}$$ $$?\mathrm{kg}?{\mathrm{m}}^2$$ (c) Suppose instead he keeps his arms in and allows friction with the ice to slow him to $$3.00\mathrm{rev}/\mathrm{s}$$. What average torque (in $$\mathrm{N}?\mathrm{m}$$ ) was exerted if this takes 18.0 seconds? $$\mathrm{N}?\mathrm{m}$$