if one of the properties of lead is gravity how can we measure it's density?

Answer 1

By measuring its mass versus its volume. Specific gravity or gravity (the force) has nothing to do with density.

Cheers.

Answer 2

Well, u know that gravity effects lead in that lead can be attracted to the gravitational pull of the Earth. This creates an effect that we call wieght. If you want to measure it's density u must find the mass of the object u wish to measure as well as the volume.

Let's say that u are measuring a 10lb. perfectly cube shaped block of lead. Let's say that each side is 3in. long.

Pounds is a measure of wieght, not mass, so u have to convert it to kilograms, which is a measure of mass--to do that u divide the number of lbs. by 2.205 and u will get roughly 4.5 kg.

The volume of the object is 3 cubic in, or, 27in. I attained that number by multiplying the lenght, width, and hieght of the object. Since it was a perfect cube each of the properties of the object was 3in long so I multiplied and got an answer of 3x3=9 and 9x3=27in.

Now, i know that density is found when one divides the mass by the volume so: 4.5kg / 27 in = 0.16 kg per in

I hope that helped

:)))

Answer 3

Density is mass divided by volume. The "gravity" property you're speaking of has nothing to do with anything. So take the weight of the piece of lead and divide by it's volume. There you go.

Answer 4

density = mass/volume
force=MmG/r^2
force=mass x acceleration

u could get the force of the lead and its acceleration to find its mass.
the only conundrum here is that sceintist in school u are thought that force is based on mass x acceleration when it sould be that mass was based on force and acceleration eg.

lets say u have 50kg and it accelerated to earth at 10m/s (i know its 9.8m/s just let me make calculation simple) then its force will be 500N

now lets say u had 100kg it wouldnt accelerate at 10m/s because the fact that the 100kg has its own gravitation pull would increase the acceleration by a tiny amout lets for argument sake say its 10.1ms this mass now has a force of 1001N

however the "mass" is apparently double the first solution but the force is not double.

the reason this problem is caused is that when we use the formulae
F=MmG/r^2 we seem to always cancle out the 2 m on eaither side and say that this is its acceleration but in reality its acceleration is actually the acceleration due to M and m.

therefore thereticaly we base force only due to the earths gravitational pull in reallity it is based on the acceleration due to the mass and the earth we seem to disclude this miniscual different and therefore misinterpret the definition of mass

Answer 5

What ? Every material object is associated with the force of gravity.