Spring length hanging down and horizontal

[dav1d]

Homework Statement

is a spring longer hanging down or horizontal

Homework Equations

The Attempt at a Solution

i think that the spring is longer hanging down because then its own mass contributes to the force of gravity, making it stretch more.

 

[LawrenceC]

That is correct. When vertical, its own weight contributes to its stretch.

 

[dacruick]

correct.

 

[dav1d]

That is correct. When vertical, its own weight contributes to its stretch.

Would it be the springs entire mass? Or just the part under the equilibrium?

 

[dacruick]

Would it be the springs entire mass? Or just the part under the equilibrium?

if it was only the part under the equilibrium then half of the spring would be stretched and half would be uncompressed right?
Each coil on the spring weights any coils above it. so you should have the most stretching at the very top, I think.

 

[dav1d]

if it was only the part under the equilibrium then half of the spring would be stretched and half would be uncompressed right?
Each coil on the spring weights any coils above it. so you should have the most stretching at the very top, I think.

But doesn't the equilibrium point move as the spring stretches?