Question 10

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One of the limiting factors in high-performance aircraft is

the number of g 's to which the pilot can be subjected

without blacking out. The new F-22 Raptor fighter can

achieve Mach 1.8 (1.8 times the speed of sound, which is

about 340 m/s). Suppose a pilot dives in a circle and

pulls up.

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If the pilot cannot exceed 5.5 g, or 5.5 times the normal acceleration of gravity, what is the tightest circle (smallest radius) in which the

plane can turn?

Express your answer using two significant figures.

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