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The Disc Brake of a High Performance Car Is Often

Question 88

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The disc brake of a high performance car is often made of carbon fiber instead of iron,thereby reducing the mass.If the mass of a carbon disc is The disc brake of a high performance car is often made of carbon fiber instead of iron,thereby reducing the mass.If the mass of a carbon disc is that of iron for the same shape and size,by what factor is the moment of inertia changed? A) one quarter B) half C) unchanged D) doubled E) quadrupled that of iron for the same shape and size,by what factor is the moment of inertia changed?


A) one quarter
B) half
C) unchanged
D) doubled
E) quadrupled

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