The lift force is directly proportional to ________
A. difference in the pressure between upper and lower surfaces.
B. difference in the velocity between upper and lower surfaces.
C. both of the mentioned
D. none of the mentioned
Answer:A
The lift force is directly proportional to ________
A. difference in the pressure between upper and lower surfaces. B. difference in the velocity between upper and lower surfaces. C. both of the mentioned D. none of the mentioned
Explanation: The lift force is directly proportional to the pressure difference between the upper and lower surfaces and from Bernoulli’s principle it is also directly proportional to difference in the velocities between upper and lower surfaces.