Home
Class 11
PHYSICS
Assuming that the atmosphere has a unifo...

Assuming that the atmosphere has a uniform density of `(1.3kg//m^(3))` and an effective height of 10 km, find the force exerted on an area of dimensions `100mxx80m` at the bottom of the atmosphere.

Text Solution

Verified by Experts

`F=PA=rhoghA=(1.3)(9.8)(10^(4))(100xx80)=12.74xx8xx10^(7)N=1.0192xx10^(9)N`
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN |Exercise Exercise 1 (Elasticity)|16 Videos
  • ELASTICITY, SURFACE TENSION AND FLUID MECHANICS

    ALLEN |Exercise Exercise 1 (Surface Tension)|21 Videos
  • CENTRE OF MASS

    ALLEN |Exercise EXERCISE-V B|19 Videos
  • ERROR AND MEASUREMENT

    ALLEN |Exercise Part-2(Exercise-2)(B)|22 Videos

Similar Questions

Explore conceptually related problems

A sphere has mass of (20+-0.4)kg and radius of (10+-0.1) m. Find the maximum percentage error in the measurement of density.

If the terminal speed of a sphere of gold (density =19.5kg//m^3 ) is 0.2m//s in a viscous liquid (density =1.5kg//m^3 ), find the terminal speed of a sphere of silver (density =10.5kg//m^3 ) of the same size in the same liquid

If the density of air at NTP is 1.293kg//m^(3) and gamma=1.41 , then the velocity of sound in air at NTP is :

A cylindrical solid of mass 10^(-2) kg and cross-sectional area 10^(-4) m^(2) is moving parallel to its axis (the x-axis ) with a uniform speed of 10^(3) m//s in the positive direction. At t = 0 , its front face passes the plane x = 0 . The region to the right of htis plane is filled with the dust particle of uniform density 10^(-3) kg/m^(3) . When a dust particles collides with the face of the cylinder, it stricks to its surface. Assuming that the dimensions of the cylinder remain parctically unchanged adn that the dust sticks only to the front face of the cylinder find the x-coordinate of the front of th ecylinder at t = 150 s .

A ball whose density is 0.4 xx 10^3 kg//m^3 falls into water from a height of 9 cm. To what depth does the ball sink ?

A jet is releasing water at the rate of 6 kg/see with speed of 4 m/sec. Now this water strikes a block of mass 10 kg. find the force exerted on block & its acceleration ?

Water is dripping out from a conical funnel at a uniform rate of 4c m^3//s through a tiny hole at the vertex in the bottom. When the slant height of the water is 3cm, find the rate of decrease of the slant height of the water-cone. Given that the vertical angle of the funnel is 120^0dot

The density of the atmosphere ats ea level is 1.31kg//m^(3) . Assume that it does not change with altitude . The how high would the atmosphere extend ? (g=10ms^(-2))

It is known that density rho of air decreases with height y as rho=rho_0e^(-y//y_0) where rho_0=1.25 kg m^-3 is the density at sea level. And y_0 is a constant . This density variation is called the law of atmosphere. Obtain this law assuming that the temperature of atmosphere remains a constant (isothermal conditions). Also assume that the value of g remains constant. A large He balloon of volume 1425 m^3 is used to lift a payload of 400kg.Assume that the balloon maintains constant radius as it rises. How high does it rise?