Fluid Mechanics Viscosity Question 116
Question: Fig. represents vertical sections of four wings moving horizontally in air. In which case the force is upwards
Options:
A) Zero
B) 20.0 cm
C) 10.6 cm
D) 40.0 cm
Show Answer
Answer:
Correct Answer: B
Solution:
According to Bernoulli’s theorem, $ h=\frac{v^{2}}{2g} $ $ \Rightarrow h=\frac{{{(2.45)}^{2}}}{2\times 10}=0.314=31.4\ cm $ \ Height of jet coming from orifice = $ 31.4-10.6=20.8\ cm $
BETA
