Measuring a change in gravity - thought experiment question

[brajesh]

TL;DR

Has anyone tried to measure a change in gravity?

Imagine I hang a mass from the ceiling of a building using a rope.
The mass is hanging 2m above the floor.

Also tied "in line" with this rope, and between the weight and the ceiling, is a scale that measures the weight of the mass.
Let's say the scale reads 10 Newtons.

Now, between the weight and the floor, I insert blades of different materials, in an effort to "block" gravity.
Maybe a blade of lead, or gold, or diamonds, or glass etc.

Has anyone tried experiments like these, to see if some materials can "block" gravity between the Earth and the mass, and notice any change in the hanging scale?

 

[anuttarasammyak]

I don’t know such experiments have been done but I assume the blade would become new additional gravity source to attract the device.

 

[PeroK]

Summary:: Has anyone tried to measure a change in gravity?

Imagine I hang a mass from the ceiling of a building using a rope.
The mass is hanging 2m above the floor.

Also tied "in line" with this rope, and between the weight and the ceiling, is a scale that measures the weight of the mass.
Let's say the scale reads 10 Newtons.

Now, between the weight and the floor, I insert blades of different materials, in an effort to "block" gravity.
Maybe a blade of lead, or gold, or diamonds, or glass etc.

Has anyone tried experiments like these, to see if some materials can "block" gravity between the Earth and the mass, and notice any change in the hanging scale?

During a solar eclipse, the gravity of the Sun isn't blocked by the Moon!

 

[A.T.]

During a solar eclipse, the gravity of the Sun isn't blocked by the Moon!

Lunar eclipse is an even better example because the entire Moon is in the Earth's total shadow (umbra).

 

[Nugatory]

Summary:: Has anyone tried to measure a change in gravity?

The wikipedia article https://en.wikipedia.org/wiki/Gravitational_shielding and its references covers much of what’s been considered. Be aware that the concept is something of a crackpot magnet.

 

[Vanadium 50]

Crackpot magnet? Or crackpot mu metal?

 

[anorlunda]

 

[russ_watters]

Imagine I hang a mass from the ceiling of a building using a rope.
The mass is hanging 2m above the floor...

Has anyone tried experiments like these, to see if some materials can "block" gravity between the Earth and the mass, and notice any change in the hanging scale?

A building? Floor? Which floor? What building? Yes, of course people use scales all the time with different materials/amounts between them and Earth.

 

[Dale]

Summary:: Has anyone tried to measure a change in gravity?

FYI, this is called gravimetry https://en.m.wikipedia.org/wiki/Gravimetry