how to make an object weightless?

Answer 1

Put it outerspace

Answer 2

Since weight is the effect gravity has on a mass (something made of matter), making something weightless would require removing the effect of gravity from that object. We do not currently possess the science or technology to completely eliminate gravity so we are stuck with only being able to minimize its effects locally with respect to relative position. For example if you take an 18 pound bowling ball from our back yard all the way to the surface of the moon its weight will change even though you haven't changed the amount of matter in it. Moon's gravity is less than Earth's, so the bowling ball will weigh less there. It will in fact weigh about 3 pounds. But how do you get to zero pounds from 18? There is a point between the Earth and the moom where the pull (gravity) from Earth is exactly equal to the pull (gravity) from the moon. If you were to place your bowling ball at exactly that point the pull from the Earth would exactly cancel the pull from the Moon. When the gravity (weight pull) of the Moon equals the gravity (weight pull) of the Earth the effective weight of the ball is zero--the ball is in an effectively weightless state. I say effectively because this assumes that the only gravities are Earth's and Moon's. But let's not forget the Sun, planets, asteroids, and stars everywhere. Each and every one has a gravity effect on your bolwing ball. For Earth and Moon the math to find that zero point is easy enough. It gets MUCH harder when you have to find the zero point for all bodies acting on the ball. So, can you get to weightless? The answer is yes, but only relatively speaking.

Answer 3

What humans experience as weight is not actually the force due to gravity (even though that is the technical definition of weight). What we feel as weight is actually the normal reaction force of the ground (or whatever surface we are in contact with) pushing upwards against us to counteract the force due to gravity, that is the apparent weight.

For example, a wood block in a container in free-fall experiences weightlessness. This is because there is no reaction to the wood block's weight from the container, as it is being pulled down with the same acceleration. The acceleration of the container equals the acceleration of the block, which equals the acceleration caused by gravity. When the container is at rest on the ground, however, the force on each piece of the block is not uniform. Because the block is not accelerating, there is also a force upward that arises because the block is a solid. Each horizontal cross section of the block experiences not only the force due to gravity on it, but also the weight of whatever portion of the block is above it. Part of feeling weight, then, is actually experiencing a pressure gradient within one's own body.

There is another aspect of the feeling of weight that a pressure gradient does not account for, an example of which is the way that our arms are pulled downward with respect to our body. This effect comes from the fact that something hanging is not supported directly via a pressure from the ground. In fact the effect is almost the exact opposite of a pressure gradient, it is a tension gradient. It occurs because each cross section of a hanging object, a rope for instance, must support the weight of every piece below it.

Hence, in short, weightlessness has nothing to do with whether we are under the influence of a gravitational force, but has to do with whether there are force gradients across our body. In free-fall, a human experiences no weight because all parts of the human object are accelerating uniformly (assuming that there are no tidal forces, which is true to a very good approximation for human-scale objects in earth orbit).

Answer 4

They all say "remove gravity". It is true, but gravity acts only on MASS. If you can make an object with a mass of zero, then it will not be submitted to gravity.
The gravity is the force that attract two bodies, according to the formula:
F = (k * M * M') / d^2 where
k is the gravitational constant, M the mass of the first object, M' the mass of the other and d the distance between the centers of the bodies.
So, if one of the Ms is = 0, then we have no forge (no gravitational attraction).
To make an object with zero mass, it needs to do not contain matter (but, then, it is not an "object" - or is it?). That, I do not know how to make!
(A dream could be called an object: in that case, it has no weight)

Answer 5

we can easily do it on earth heres how
fly a plane to a high altitude and then switch of the engine and let it fall freely then all the objects in the plane will become weightless


this is how they shot the weightless scenes in apollo 13

Answer 6

well try this, (this is a common illustartion in any physics book)

in an elevator, setup a spring balance, (the type of weighing scale where you can place the thing you can weigh by a hook or something). make the elevator go up to the highest floor.

now, setup a bomb on the elevetor line, then detonate it, you will be falling with the elevator at the rate of 9.8 m/s/s then examine the scale, you will notice that it wieghs zero. (i never tried it but i get the idea)

Answer 7

Throw it up. Until it comes back down again, it is weightless.

Answer 8

By making it stay in Zero garvity. this can be done by keeping in a room with an upward thrust (i.e. in the direction opposite to that of force of gravity)of force 9.8m/sec square.[the force of the gravity on earth is 9.8m/sec square].

Answer 9

make it revolve around an heavenly body.
OR
remove even the micro gravity present.

Answer 10

Reduce the gravitational force acting on it.

Answer 11

Simple remove gravity or put in in space .some scientist call it antigravity matter