4. A pirouette is a ballet move where the balerina spins on her toem. The ballerina in able to control the angular speed of her spin by adjusting the ponition of her arma and legs; hence dchanging her man distribution. A ballerina, with her arms and leg outatretched, in initinlly spinning with an angular spend of or rads/a. She then brings in her arms and legs, and her angulur spend ineress to 10r rada/a (a) By modelling the ballerina with her arms and legs tucked in as a uniform cylinder of mam 60kg and radius 13kem, find her angular momentum after she has tucked her arms in. The moment of inertia of a uniform cylinder of mam M und radiun Rin given by /-M (b) Henon, entimate her moment of inertin with respect to her axis of rotation when her arms and leg were outatretched.

4. A pirouette is a ballet move where the balerina spins on her toem. The ballerina in able to control the angular speed of her spin by adjusting the ponition of her arma and legs; hence dchanging her man distribution. A ballerina, with her arms and leg outatretched, in initinlly spinning with an angular spend of or rads/a. She then brings in her arms and legs, and her angulur spend ineress to 10r rada/a (a) By modelling the ballerina with her arms and legs tucked in as a uniform cylinder of mam 60kg and radius 13kem, find her angular momentum after she has tucked her arms in. The moment of inertia of a uniform cylinder of mam M und radiun Rin given by /-M (b) Henon, entimate her moment of inertin with respect to her axis of rotation when her arms and leg were outatretched.