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You (or anything) can only float if the force of gravity pulling down is exactly balanced by some other force pushing up. In a fluid there's a force called buoyancy pushing up on anything in the fluid, the strength of which is equal to the weight of fluid 'displaced' (the fluid that would be in that space if the thing weren't there). The cool thing is that buoyancy is actually generated BY gravity acting on all the other fluid and is always in the opposite direction to gravity (up).
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∙ 13y ago
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Why do people float in zero gravity?
Gravity is a force that pulls you down to the centre of a planet. If it was zero gravity you wouldn't be pulled down. Earth is the only planet that has gravity that's why you "float" in space. I hope this has helped.
Why does a swing slow down when you stop pushing?
gravity
Why needle with grease float on water surface?
Surface tension. Translated that means that the attraction between the water molecules (to each other) is greater than the force (gravity) pushing the needle down.
Why do corks float in water?
Any object placed in water will be pulled down into the liquid by gravity. No surprise there. But an object less dense than water will only be pulled down until the object displaces an amount of water equal to its own mass. Then it will float. The water will be pushing up equal to the force of gravity pulling down - an equilibrium. Any object that weighs less than its own volume of water will float. It's lower overall density will result in buoyancy.
What are the effects on humans and accommodations overcoming gravity slingshot?
cause it is pushing down on your spine
Does pepper float?
No, because it doesn't have enough density to do that.
What are the 2 forces involved in sinking and floating?
Gravity is pulling down, and Buoyancy is pushing up. When the force of gravity is greater than the buoyant force, objects sink. When the buoyant force is greater than the force of gravity, objects float.
Why do people float in zero gravity?
Gravity is a force that pulls you down to the centre of a planet. If it was zero gravity you wouldn't be pulled down. Earth is the only planet that has gravity that's why you "float" in space. I hope this has helped.
Why does a swing slow down when you stop pushing?
gravity
What are the forces acting on sitting still?
The chair in pushing you up and the gravity pushing you down
How does gravity effect weight of an object?
As somebody previously said, gravity is directly proportional to weight. As gravity increases, weight increases. The simplest way to define gravity is the downward force that holds objects down. eg. you can sit in your computer chair due to gravity. It is holding you down. You would otherwise float as in space where there is no gravity. If that gravity force becomes greater, ie. there is more force pushing you down, you will weigh more. It pushes down on you more.
How does the force of gravity influence the movements in baseball?
Gravity is always pushing the ball down.
Why would you float up in space if you did not have any gravity?
cause gravity pulls us down and doesn't let us float
Why needle with grease float on water surface?
Surface tension. Translated that means that the attraction between the water molecules (to each other) is greater than the force (gravity) pushing the needle down.
The forces that act on a rock at rest in your hand?
Gravity is pushing the rock down toward the Earth and your hand is pushing upward in opposite direction but equal to gravity.
If gravity is pulling you what is pushing you back?
Nothing. Actually gravity is pushing you down but there is enough air resistance on the earth to stop us feeling heavy and crushed
Why do corks float in water?
Any object placed in water will be pulled down into the liquid by gravity. No surprise there. But an object less dense than water will only be pulled down until the object displaces an amount of water equal to its own mass. Then it will float. The water will be pushing up equal to the force of gravity pulling down - an equilibrium. Any object that weighs less than its own volume of water will float. It's lower overall density will result in buoyancy.
