Does the rotational kinetic energy of the diver in Exercise 11.6 change as he pulls his arms in? Explain.

Data from Exercises 11.6

Divers increase their spin by tucking in their arms and legs (Figure 11.32). Suppose the outstretched body of a diver rotates at 1.2 revolutions per second before he pulls his arms and knees into his chest, reducing his rotational inertia from \(9.4 \mathrm{~kg} \cdot \mathrm{m}^{2}\) to \(3.1 \mathrm{~kg} \cdot \mathrm{m}^{2}\). What is his rotational velocity after he tucks in his arms and legs?

Transcribed Image Text:

Figure 11.32