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A prestressed structure is not actually weightless; rather, it is designed to redistribute and reduce internal stresses. The prestressing forces counteract the external loads, resulting in a more efficient use of materials and a lighter overall structure. This allows for longer spans and improved structural performance.

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1y ago

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What is weightless odorless and if put in a barrel makes it lighter?

Helium is a gas that is weightless, odourless, and would make a barrel lighter.


How will you describe a vacuum?

An area that is airless and weightless.


Is the moon weightless?

The moon is weightless, because the centrifical force of its rotation is counter acting on gravity. If both forces are exactly the same, they cancel out each other. The moon would have weight if it was close enough to fall, but otherwise no.


Imagine you are on a spaceship that is far from the sun or any planet Explain why 500 kg piece of equipment would be difficult to move even though the object mold be weightless?

Even though the object is weightless due to being far from any gravitational pull, it would still have inertia, requiring the same amount of force to move and stop it as it would on Earth. Without gravity, there is no friction or resistance to help with pushing or stopping the object, making it difficult to control its movements in a weightless environment. Additionally, any movements could cause the equipment to drift uncontrollably, making it challenging to reposition.


Why you are weightless in the center of the earth but not in the middle of outer space?

In the center of the Earth, the gravitational forces from all directions cancel each other out, resulting in a net zero gravitational force, making you weightless. In outer space, there is no surrounding mass or gravity pulling on you, so there is no force acting on you to counteract your weight, leading to a sensation of weightlessness.