# Chapter 10 - Section 10.4 - Rotational Energy - Got It?: 10.6

b) more

#### Work Step by Step

Recall that work done is equal to the change in kinetic energy. In both cases, the moment of inertia is the same, so we compare the differences in angular velocities squared. Because $200^2$ minus $100^2$ is greater than $100^2$ minus $0^2$, it will take more work to get the wheel to 200 rpm.

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