In a Wind Tunnel the Pressure on the Top Surface

question 14

Multiple Choice

In a wind tunnel the pressure on the top surface of a model airplane wing is 8.8 × 10⁴ N/m and the pressure on the bottom surface is 9.0 × 10⁴ N/m². If the area of the top and bottom surfaces of each wing is 2.0 m², what is the total lift on the model airplane?

• A) 2.0 × 10³ N
• B) 8.0 × 10³ N
• C) 1.6 × 10⁴ N
• D) 3.6 × 10⁴ N
• E) 1.0 × 10³ N

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