In a Wind Tunnel the Pressure on the Top Surface

question 17

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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