Discussion
A pitching moment coefficient changes by \( -0.04 \) for a lift coefficient change of \( 0.50 \). The static margin is
Answer: D
The static margin is the negative of the slope, \( 0.04/0.50 = 0.08 \). Measuring the slope against lift coefficient rather than angle of attack gives the margin directly, which is why the curve is usually plotted that way.
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