In Operation an Aluminum Flywheel Within an Engine Gearbox Increases $\circ$

question 5

Multiple Choice

In operation an aluminum flywheel within an engine gearbox increases its temperature by 40 ^$\circ$ C.Assuming the flywheel to be a uniform circular disk,calculate the percentage change in the moment of inertia of the flywheel. (Coefficient of linear expansion for Al = 24 $\times$ 10^-6/K.)

• A)0.002%
• B)0.2%
• C)0.1%
• D)0.001%
• E)1.0%

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