physics

Air streams horizontally past a small airplane's wings such that the speed is 70.0m/s over the top surface and 60.0m/s past the bottom surface. If the plane has a wing area of 16.2m^2 on the top and on the bottom, what is the net vertical force that the air exerts on the airplane?

1. 👍
2. 👎
3. 👁
1. http://hyperphysics.phy-astr.gsu.edu/Hbase/pber.html

As a first approximation assume the density of the air is the same on the bottom side as the top.

Pbottom+d*1/2 *Vbottom^2=Pressuretop + d*1/2*Vtop^2
or pressuretop-pressurebottom=d*1/2(Vtop^2-Vbottom^2)

So, after you calculate that pressure difference, multipy it by the wing area, and you have the lift force.

1. 👍
2. 👎
👤
bobpursley

Similar Questions

1. Physics (Algebra-based)

A block starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the track.It leaves the track horizontally, flies through the air, and subsequently strikes the ground. gravity=

2. physics

You're in an airplane that flies horizontally with speed 860 km/h (240 m/s ) when an engine falls off. Neglecting air resistance, assume it takes 26 s for the engine to hit the ground. Hight of airplane is: H = 3.3 km horizontal

3. physics

Modern airplane design calls for a lift, due to the net force of the moving air on the wing, of about 2000 N per square meter of wing area. Assume the air flows past the wing of an aircraft with streamline flow. If the speed of

4. Math

an airplane travels 500 km with the wind in the same time that it takes the airplane to travel 400 km against the wind. the average speed of the plane in still air is 180 km/h. what is the average speed of the wind? Airplane with

1. Calculus

Derivatives - chain rule An airplane, flying horizontally at an altitude of 1 mile, passes directly over an observer. If the constant speed of the airplane is 400 miles per hour, how fast is its distance from the observer

2. Physics

PLEASE HELP! A person throws a rock horizontally off a cliff ata a speed of 9 m/s from a point 64.8 m above the ground. How long is the rock in the air? 13.2 s 26.4 s 3.64 s(my guess) 5.14 s A package falls from an airplane in

3. earth

Sometimes streams and rivers run in fairly straight lines. Sometimes, they meander or curve and wander. What is your idea about how faster water affects the shape of a stream or river? A) Faster streams are straighter. B) Faster

4. physics

An airplane of mass 1.6 x 10^4 kg is moving at 58 m/s. The pilot then revs up the engine so that the forward thrust by the air around the propeller becomes 7.0 x 10^4 N. If the force exerted by air resistance on the body of the

1. physics

You're in an airplane that flies horizontally with speed 830km/h (230m/s ) when an engine falls off. Neglecting air resistance, assume it takes 35s for the engine to hit the ground. Find the height of airplane. Find the horizontal

2. Physics

The x axis of a trajectory represents its ____________. Height in the vertical direction. Displacement in the horizontal direction(my guess) Longitude Latitude A person throws a rock horizontally off a cliff ata a speed of 9 m/s

3. physics

A small airplane loses a bolt while traveling at a speed of 150 meters/second in the horizontal direction. The bolt follows a parabolic path and lands on the ground after 25 seconds. How far will the bolt have traveled

4. Physics

a bomb is dropped from an airplane travelling horizontally with a speed of 300 mi/hr if the airplane is 10000ft. above the ground, how far from the target must it be released, neglect friction?