Discussion
A body has a friction drag of \( 80 \) N and a pressure drag of \( 320 \) N. The proportion of its total drag that is pressure drag is
Answer: A
The total is \( 80 + 320 = 400 \) N, so pressure drag is \( 320/400 = 0.80 \), that is eighty per cent. A split this heavily weighted towards pressure drag is characteristic of a bluff body with a large separated wake.
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