Fluid Mechanics Viscosity Question 116
Fig. represents vertical sections of four wings moving horizontally in air. In which case is the force 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 9.81}=0.303=30.3\ cm $ \ Height of jet coming from orifice = $ 30.3-10.6=19.7\ cm $
BETA
