Home
Class 11
PHYSICS
Let air at rest at the front edge of win...

Let air at rest at the front edge of wing of an aeroplane and air passing over the surface of the wing at a fast speed `v`. If density of air is `rho`, then find out the highest value for `v` in stream line flow when atmospheric pressure is `P_(atm)`.

Text Solution

Verified by Experts

The correct Answer is:
`v_(max) = ((2p_(atm))/(P))^(1//2)`
Promotional Banner

Topper's Solved these Questions

  • FLUID MECHANICS

    RESONANCE|Exercise Exercise- 1 PART - II Section (A)|6 Videos

  • FLUID MECHANICS

    RESONANCE|Exercise Exercise- 1 PART - II Section (B)|8 Videos

  • FLUID MECHANICS

    RESONANCE|Exercise Exercise- 1 PART - I Section (B)|3 Videos

  • ELECTROSTATICS

    RESONANCE|Exercise Exercise|52 Videos

  • FULL TEST 1

    RESONANCE|Exercise Exercise|30 Videos

Similar Questions

Explore conceptually related problems

How does the speed v of sound in air depend on the atmospheric pressure P?

In a test experiement on a model aeroplane in a wind tunnel, the flow speeds on the lower and upper surfaces of the wing are upsilon and upsilonsqrt(2) respectively. If the density of air is rho and the surface area of the wings is A, what is the dynamic lift on the wing of aeroplane.

The flow speeds of air on the lower and upper surfaces of the wing ofan aeroplane are v and sqrt2v respectively. A is the area of the wing and rho is the density of th e surrounding air. What is the force of the dynamic lift on the wing ?

An aircraft is moving on a runway for its take off. The wind speed on the lower and upper surface of the wings are 'v' and 'sqrt2'v . If the density of air is rho and surface area of the wing is A, the upward force exerted on thei wings will be

There is a long vertical tube of radius r containing air at atmospheric pressure. A steel ball is held at the mouth of the tube and dropped. The ball has radius r and it just fits inside the tube. The tube wall is perfectly smooth and no air can leak from the tube as the ball falls inside it. The ball falls through half the length of the tube before coming to rest. Assume that wall of the tube is perfectly conducting and temperature of the air inside the tube remains constant. Density of steel is d and atmospheric pressure is P_(0) and take L gt gt r . Take air to be an ideal gas. (a) Find the radius (r) of the tube. (b) At what depth from the top of the tube the ball will be in equilibrium?

A man is running along a road with speed u. On his chest there is a paper of mass m and area S. There is a wind blowing against the man at speed V. Density of air is rho . Assume that the air molecules after striking the paper come to rest relative to the man. Find the minimum coefficient of friction between the paper and the chest so that the paper does not fall ?

Air streams horizontally past an air plane. The speed over the top surface is 60 m/s, and that under the bottom surface is 45 m/s. The density of air is 1.293 kg/ m^(3) , then the difference in pressure

Assume that a car travelling on horizontal straight road with an accelration of a 5 ms^(-2) has all its windows rolled up and all air vents closed. Length of the car is L=3.0m. By considering a horizontal tube of air that extends from the windshield to th rear surface, and applying Newton's Law on it, calculate the difference in pressure of air at the rear and front of the car. How does this pressure compare with the atmospheric pressure? Density of air rho=1.2kgm^(-3)