Published by:
CGP EDU Academic Team
Published on: September 13, 2026
Lifting power of helicopter depends upon hovering speed of blades ( ω ), length of blades ( λ ) and density of air ( ρ ). how many times lifting power will increase if hovering speed is increased two times.
Text Solution
Verified by ExpertsThe correct answer is:
0008
Sol. P = k ω a ρ b λ c ⇒ ML
2 T –3 = (T –1 ) a (ML –3 ) b L c ⇒ a = 3 ∴ P ∝ ω
3
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