Question

Emmy the trapeze artist flies through the air with her arms and legs stretched out, tumbling head over heels. As she rotates, she pulls her arms and legs close to her chest, as shown in the illustration As Emmy pulls her arms and legs in, how does her rotational inertia change? It increases. It decreases. It remains constant As Emmy pulls her arms and legs in, how does her angular momentum change? It increases It decreases It remains constant As Emmy pulls her arms and legs in, how does her rotational speed change? It increases

Answer 1

her arms a As Emmy and legs legs in Emmy pulls her then rotational inertia decreases as rotational inertia gines the measure of mass distributed about axis of rotation. Angular momentum is conserved in this stunt so It remains constant as there is no external torque acting L= IW Angular momentum I decreases w increases, angular increases = odo 9 as speed

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