Question

An ice skater is spinning about a fixed axis with an angular velocity of 0.14 rad/s. Initially, her arms are outstretched and her moment of inertia is 1.49 kgm^2. When she pulls her arms in toward her chest, her moment of inertia decreases to 0.77 kgm^2. What is her angular velocity (in rad/s) for this new configuration? An ice skater is spinning about a fixed axis with an angular velocity of 0.11 rad/s. Initially, her arms are outstretched and her moment of inertia is 1.24 kgm^2. When she pulls her arms in toward her chest, her moment of inertia decreases to 0.63 kgm^2. What is the change in her rotational kinetic energy (in J) associated with the movement of her arms?

          An ice skater is spinning about a fixed axis with an angular velocity of 0.14 rad/s. Initially, her arms are outstretched and her moment of inertia is 1.49 kgm^2. When she pulls her arms in toward her chest, her moment of inertia decreases to 0.77 kgm^2. What is her angular velocity (in rad/s) for this new configuration?

An ice skater is spinning about a fixed axis with an angular velocity of 0.11 rad/s. Initially, her arms are outstretched and her moment of inertia is 1.24 kgm^2. When she pulls her arms in toward her chest, her moment of inertia decreases to 0.63 kgm^2. What is the change in her rotational kinetic energy (in J) associated with the movement of her arms?

Added by Michael M.

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