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Lift must be than gravity in order for a plane to stay in the air?
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∙ 13y ago
...the same or greater than...
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∙ 13y ago
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How do the forces of lift drag gravity and thrust affect the flight of an airplane?
Let's take the forces one-at-a-time starting with Thrust.1. Thrust - is provided by the propeller or jet engine; thrust acts to move the plane forward into the air.2. Lift - As the plane moves forward the shape of the wing (airfoil) causes a pressure difference that exerts an upward force on the wing -- the lift force. As thrust increases lift increases and the plane rises as lift overcomes the downward pull of gravity.3. Gravity - the force that pulls objects back to Earth. In order to have an object like a plane rise higher the Lift force must be stronger than the pull of gravity. If a plane weighs 10,000 lbs (pull of Gravity) then Lift must be 10,001 lbs or more in order for the plane to rise.4. Drag - Air moving over a surface experiences friction as the air molecules rub against the surface. Rough surfaces have more friction than smooth ones, but even smooth surfaces have some friction; the net effect is to oppose the forward motion and slow the airplane down. Thrust must be strong enough to overcome the total Drag and accelerate the plane to a speed that generates enough Lift to overcome Gravity and allow the plane to rise.
What makes smaller airplanes go faster than bigger airplanes?
There are four factors that are exerted on airplanes. Thrust, Drag, Gravity and lift. Lift must be higher then gravity to make a plane go up. Thrust be be stronger then drag to make a plane go faster. As a plane becomes larger, more drag is added to the plane. This requires more thrust to maintain the same speed. So, as a plane gets larger the amount of power an engine must produce goes up drastically. Small planes with the same horsepower or thrust ratings will alays be able to go faster.
How does weight affect lift?
They are independent and opposing forces. Lift must exceed weight in order to fly.
What does it mean for an object to be heavy?
It has enough weight under Earth-like gravity that one must exert themselves considerably to lift it.
What must be true about the forces in order for a car to roll down a ramp?
gravity
When the plane is flying at a constant heightwhich two forces must be balanced?
Gravity and lift.
How do the forces of lift drag gravity and thrust affect the flight of an airplane?
Let's take the forces one-at-a-time starting with Thrust.1. Thrust - is provided by the propeller or jet engine; thrust acts to move the plane forward into the air.2. Lift - As the plane moves forward the shape of the wing (airfoil) causes a pressure difference that exerts an upward force on the wing -- the lift force. As thrust increases lift increases and the plane rises as lift overcomes the downward pull of gravity.3. Gravity - the force that pulls objects back to Earth. In order to have an object like a plane rise higher the Lift force must be stronger than the pull of gravity. If a plane weighs 10,000 lbs (pull of Gravity) then Lift must be 10,001 lbs or more in order for the plane to rise.4. Drag - Air moving over a surface experiences friction as the air molecules rub against the surface. Rough surfaces have more friction than smooth ones, but even smooth surfaces have some friction; the net effect is to oppose the forward motion and slow the airplane down. Thrust must be strong enough to overcome the total Drag and accelerate the plane to a speed that generates enough Lift to overcome Gravity and allow the plane to rise.
What best describes what must happen in order for a person to lift an object?
The force of gravity must be greater than the mass of the object
Which statements best describes what must happen in order for a person to lift an object?
The force of gravity must be greater than the mass of the object
What happens to the four forces in order to make an airplane fly?
The four basic forces acting on an aircraft are Lift, Weight (Gravity), Thrust, and Drag. In order for an aircraft to ascend, Lift must be greater than Weight, and Thrust must be greater than Drag.
What makes smaller airplanes go faster than bigger airplanes?
There are four factors that are exerted on airplanes. Thrust, Drag, Gravity and lift. Lift must be higher then gravity to make a plane go up. Thrust be be stronger then drag to make a plane go faster. As a plane becomes larger, more drag is added to the plane. This requires more thrust to maintain the same speed. So, as a plane gets larger the amount of power an engine must produce goes up drastically. Small planes with the same horsepower or thrust ratings will alays be able to go faster.
If a plane is flying at a constant speed and height is weight and lift equal?
If weight and lift aren't equal, then there's a net vertical force on the plane, and it must have vertical acceleration.
What must happen to the four forces to make a airplane fly?
The four forces that act on an airplane are lift, weight, thrust and drag. During steady state flight (the plane is not climbing, descending, accelerating or decelerating) lift is equal to weight, and thrust is equal to drag. In order for a plane to enter a climb, lift must be momentarily greater than weight. Once the plane is established in this climb (lets say 1000 feet per minute) lift is again equal to weight, and it is the thrust that is pulling the plane up higher and higher. Imagine you have a string tied to a box next to a ramp. To get that box established on the ramp, you must lift it up (lift greater than weight) but once it is on the ramp (established in the climb) you are using that string to pull it forward as it climbs up the ramp and gains height.
How come an airplane floats in air?
Essentially there are 4 aerodynamic forces that act on an airplane in flight; these are lift, drag, thrust and gravity (or weight).In simple terms, drag is the resistance of air (the backward force), thrust is the power of the airplane's engine (the forward force), lift is the upward force and gravity is the downward force. So for airplanes to fly, the thrust must be greater than the drag and the lift must be greater than the gravity (so as you can see, drag opposes thrust and lift opposes gravity).This is certainly the case when an airplane takes off or climbs. However, when it is in straight and level flight the opposing forces of lift and gravity are balanced. During a descent, gravity exceeds lift and to slow an airplane drag has to overcome thrust.
What force must a rocket overcome to be launched into space?
Alright, it is mainly the force of gravity. This is because if there was no gravity, you do not heat energy to fire the rocket up.
How does thrust help an airplane?
Thrust is the force that provides an airplane its speed. Thrust must be brought to a certain level and maintained in order for the plane to move at a speed that is sufficient to create lift from the wings.
How does weight affect lift?
They are independent and opposing forces. Lift must exceed weight in order to fly.
