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What forces are acting on a balloon tied with string to the ground?
Wiki User
∙ 10y ago
If you need a one word answer, then I think "buoyancy" is what you're looking for.
Buoyancy is caused by falling air pressure with altitude. Air pressure at sea level is over 14.7 pounds per square inch (2000 pounds per square foot!). You can feel this pressure by pulling on a suction cup. Because air pressure drops with altitude, the force from air on the top of an object is less than on the bottom. If the object has very low density (such as a helium-filled balloon), this difference in force is enough to push the object up.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agowhen you blow a balloon and throw it up in the air.. it floats for a while and then drops to the floor due to the gravity. gravity is pulling the ballon down. but when there is helium in the ballon it cancels out the force of gravity adn it floats :)
Wiki User
∙ 11y agoAn upward force of buoyancy and a downward force of weight.
Force of buoyancy = density of air*gravity*Volume of balloon
Weight = (mass of helium + mass of balloon)*gravity.
Upon Analysis SUM Fy= Fb - W = ma <----From Newton's 2nd Law of Motion.
Wiki User
∙ 10y agoGravity. That's it, if the ballon is filled with air of the same density as the surrounding air. This is why you can't just blow up a ballon and expect it to float. If you fill the balloon with either less dense air (hotter air, for example) or a less dense gas like helium, then it becomes buoyant. It is then acted upon by a force equivalent to the weight of the air it displaces. The net force depends upon the weight of the ballon and its contents. Let's suppose that this is the situation, that you have a buoyant balloon. What force does the string apply? It won't let the balloon move up, but it's not pulling it down, either. The string is applying exactly the same force to the balloon as the force of buoyancy, but in the opposite direction. The net force is zero.
eosbo
Air resistance, normal force, gravity, applied force
Kennedy D'Amore
Larissa Thompson
Wiki User
∙ 11y agoThye helium that is in the balloon is lighter that air so it rises.
Wiki User
∙ 10y agodont use this website
it is bad:(
Wiki User
∙ 14y agopressure, friction, gravity
Wiki User
∙ 14y agoWeight of the ballon and its contents.
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What are the forces acting on a chain in tension?
Weight of the chain and tension in the string
What will be value of tension produced by two opposite forces acting on a string at opposite ends?
equal to zero because two opposite forces will cancel each other
How many forces are acting on a simple pendulum?
At rest, tension in the string and weight of the bob are the two forces both equal and opposite. During its displaced position, the weight of the bod, tension of the string and restoring force all the three would act on it
What will happen if you release a balloon from the string?
Now, considering you are asking this question, I presume you can't undo knots otherwise you would have tried it yourself. If the balloon is filled with helium (the stuff that makes your voice higher pitched) then it should rise, but it would probably rise without the string being untied it that particular instance. If however you or someone else used their own breath to blow up the balloon then it will fall to the ground, which it will also do even if the string is attached (but only to the balloon mind).
If the net force on an object is zero does the object have balanced forces?
Either a balanced group of forces is acting on it, or else zero force is.
What are the forces acting on a chain in tension?
Weight of the chain and tension in the string
A cat toy is hanging by a string tied to a doorknob Identify two separate forces that are acting on the toy?
Gravity is acting on the toy, and there is also tension in the string that ties the toy to the doorknob.
How do you make music with a balloon with a string?
first thats a stupid ? but anyway u just put air in the balloon and get a string and hold the balloon with the hand that you write with and the string with the other and on the bottom of the balloon you but the string on that part and yank the string as fast as you can!!
What forces are acting on a hanging pen?
When a pen is hanging, two forces act on it - the upthrust and the force of tension in the string.
What will be tension in string on which two forces of 1010N act horizontally?
You've specified that the two forces act horizontally, but you've said nothing about how they're arranged relative to the string. -- Are the forces pulling in opposite directions on opposite ends of the string ? -- Are the forces both acting at the same end of the string, with the other end tied to a wall ? -- Are the forces in the same plane ? If so, is the string also in that plane ? I can give you configurations in which the forces are horizontal, and the tension in the string is anything you want between zero and 2,020 N. In fact, if both ends of the string are fastened to walls, and the horizontal forces push on the center of the string and perpendicular to it, then you can create any tension you want in the string, up to the breaking limit of the walls.
What will be value of tension produced by two opposite forces acting on a string at opposite ends?
equal to zero because two opposite forces will cancel each other
How many forces are acting on a simple pendulum?
At rest, tension in the string and weight of the bob are the two forces both equal and opposite. During its displaced position, the weight of the bod, tension of the string and restoring force all the three would act on it
What will happen if you release a balloon from the string?
Now, considering you are asking this question, I presume you can't undo knots otherwise you would have tried it yourself. If the balloon is filled with helium (the stuff that makes your voice higher pitched) then it should rise, but it would probably rise without the string being untied it that particular instance. If however you or someone else used their own breath to blow up the balloon then it will fall to the ground, which it will also do even if the string is attached (but only to the balloon mind).
If the net force on an object is zero does the object have balanced forces?
Either a balanced group of forces is acting on it, or else zero force is.
How was the movie red balloon made How did the balloon stay in the air and follow the boy?
invisible string
How do you do a sentence with rupture?
When the balloon was to close to the light it will rupture from the string
Why does the balloon not move while you are holding its neck?
Balloon on string would dangling and moving from the wind, it doesn't move on its' own.
