How do you solve this? **Title: Understanding Rotational Dynamics in Figure Skating****Text:**The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center (\( I_{\text{bar}} = \frac{1}{12} m \ell^2 \) where \( \ell \) is the length of the bar). When the skater's hands and arms are brought in and wrapped around their body to execute the spin, the hands and arms can be considered a thin-walled hollow cylinder. The hands and arms have a combined mass of 10 kg. When outstretched, they span 2.1 m. When wrapped, they form a cylinder of radius 17 cm. The moment of inertia about the rotation axis of the remainder of the body is constant and equal to 0.3 kg·m². If the original angular speed is 0.1 rev/s, what is the final angular speed?\[\omega_f = \underline{\hspace{3cm}} \text{rev/s}\]Determine how much the figure skater's rotational KE increased. *[NOTE: We express energy in J. To get J, you must convert your angular velocities to the appropriate mks units which are rad/s.]*\[\Delta KE_f = \underline{\hspace{3cm}} \]

Given data, Radius when outstretched R=2.1 m Radius when wrapped r=0.17 m Mass m=10 kg Inertia…

The outstretched hands and arms of a figure skater preparing for a spin can be considered a slender rod pivoting about an axis through its center ( Ibar=me2 where & is the length of the bar). When the skater's hands and arms are brought in and wrapped around their body to execute the spin, the hands and arms can be considered a thin-walled hollow cylinder. The hands and arms have a combined mass 10 kg. When outstretched, they span 2.1 m. When wrapped, they form a cylinder of radius 17 cm. The moment of inertia about the rotation axis of the remainder of the body is constant and equal to 0.3 kg-m2. If the original angular speed is 0.1 rev/s, what is the final angular speed? wf = rev/s Determine how much the figure skater's rotational KE increased. [NOTE: We express energy in J. To get J, you must convert your angular velocities to the appropriate mks units which are rad/s.] AKE, =