(a) By modelling the ballerina with her arms and legs tucked in as a uniform cylinder of mass 60kg and radius 13cm, find her angular momentum after she has tucked her arms in. The moment of inertia of a uniform eylinder of mass M and radius R is given by I = MR 1 = (b) Hence, estimate her moment of inertia with respect to her axis of rotation when her arms and legs were outstretched.

(a) By modelling the ballerina with her arms and legs tucked in as a uniform cylinder of mass 60kg and radius 13cm, find her angular momentum after she has tucked her arms in. The moment of inertia of a uniform eylinder of mass M and radius R is given by I = MR 1 = (b) Hence, estimate her moment of inertia with respect to her axis of rotation when her arms and legs were outstretched.