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What forces act on a hot air balloon?
Bouyancy, pressure, and gravity.
How much hot air does it take to raise a hot air balloon?
No set answer to that, it depends on how much the balloon has to lift.
What does density have to do with hot air balloons?
The burners on a hot air balloon create hot air, which rises into the balloon and displaces the cooler air from the balloon. Then the hot air, being less dense, will lift the balloon as the cooler surrounding air sinks below it. Once the air cools, the balloon will lose its lift and settle back to the ground. The hot air is only slightly less dense, so it requires a lot of volume to lift the comparatively smaller mass of the balloon and gondola.
What is an example of bouyancy?
The bouyancy of of a floating object is affected by ballast.
How does a balloon hovercraft work does it have lots of forces acting on it and what does friction have to do with it?
It has lift by having hot air, which rises. Gravity, Lift, and Friction act upon the balloon hovercraft. The friction is a fluid friction known as Air Resistance.
What forces act on a hot air balloon?
Bouyancy, pressure, and gravity.
How do helium balloons fall?
Helium diffuses through te balloon skin, out of the balloon, and its bouyancy therefore decreases.
A balloon floats motionless in the air. A balloonist begins climbing the supporting cable. In which direction does the balloon move as the balloonist climbs?
The balloon will move down as the balloonist transfers his weight onto the cable. If the balloon has enough bouyancy in air, enough lift, it will return back up to the position it was when our climber approached the support cable. This assumes the balloon is tethered to the ground and has just a bit more lift than the opposing mass of the balloon and the climber. The balloon will have lifted the balloonist up along with its own bulk. As the climber climbs, the balloon might experience the slightest "dip" at each transfer of the balloonists weight as he moves up the cable, unless he moves very slowly. Again, this is for a balloon capable of lifting itself and the balloonist, but which only has a bit more bouyancy in air than the total load on it. That means it can barely lift itself and the balloonist. If the balloon was at equilibrium as far as its lift where it was just able to support the weight of its own bulk, the balloonist will be pulling it down as he climbs and will remain near the ground while pulling the balloon down toward him with each step of his climb. The climber has added "too much weight" to the craft. In the end, he will have pulled the balloon down to himself on the ground. In the case of a really big balloon with a huge amount of lift that was tethered to the ground, it would hardly move at all, but would move down a tiny bit as the climber began, and then pretty much stay put in the air as the climber mounted the support cable.
Is the upward force on an object called levitation or buoyancy or?
Bouyancy In case of an aircraft or a rocket, it would be called lift.
How much can a helium balloon lift?
depends how big the helium balloon is and how many
What is free lift in pilot balloon?
The free lift of the Pilot Balloon is defined as the difference between the total lift and the weight of the balloon and its load. The free lift is really the net buoyancy of the balloon. Thus free lift is the force tending to drive the balloon (Hydrogen filled) upward, which depends upon the amount of hydrogen gas filled in it. If a hydrogen balloon is inflated until it floats with certain weight attached to it, than it indicates that the attached weight balances the upward force acting on it. This weight is called free lift of the balloon and if weight is removed, the balloon rises up (with fixed rate of ascent corresponding to weight attached while inflating).
What is the standard volume of a weather balloon?
A 567kg weather balloon is designed to lift a 3670 package.......
Can a hot air balloon lift a car?
yes
How will you measure the buoyant force of a balloon?
Measure how much it can lift.
Why is the size of balloon in the hot air balloon important?
Big enough to allow the hot air to create lift.
How much hot air does it take to raise a hot air balloon?
No set answer to that, it depends on how much the balloon has to lift.
What is the bouyancy of air?
Bouyant force was described by Archimedes to be equal to the force due to gravity of the substance displaced by the object. So in the case of a balloon in water the bouyant force is equal to the force of weight of the water that the balloon displaces otherwise known as the (volume of the balloon)*(density of water)*gravity. Hope that helps
