Im back, and with a question about spring force

[Yellowkies_3275]

Homework Statement

I feel like my numbers are wrong so I just had a general question

what is a typical value for k (spring constant) for a rubber band

assuming in this case that k=F/x is an equation that works for rubber bands

because the number i got...idk it seems rather large

Homework Equations

k=F/x

The Attempt at a Solution

so I was doing research and I determined the best way to find k when F and k are unknown is too welp just you know, take my rubber band and hang an ubject with a known weight from it and measure the displacement to use as my x the weight becoming my F

so I got an object with a weight of 0.362 kg

and hung it from the rubber band and I measured the displacement to be 0.058 m

so like using them science things my k should be

6.24 N/m right?

but doesn't this number seem large? or is it just me?

and an even more unfortunately pathetic question:

so like this number is like a ratio right so like if i have a different weight or force my k would still be the same right because the ratio between the force and displacement would be the same right? idk help me I am going to fail physics

 

[ehild]

Homework Statement

I feel like my numbers are wrong so I just had a general question

what is a typical value for k (spring constant) for a rubber band

assuming in this case that k=F/x is an equation that works for rubber bands

because the number i got...idk it seems rather large

Homework Equations

k=F/x

The Attempt at a Solution

so I was doing research and I determined the best way to find k when F and k are unknown is too welp just you know, take my rubber band and hang an ubject with a known weight from it and measure the displacement to use as my x the weight becoming my F

so I got an object with a weight of 0.362 kg

kg is the unit of mass. The force acting on the object of m=.362 kg is W=mg (N)

and hung it from the rubber band and I measured the displacement to be 0.058 m

so like using them science things my k should be

6.24 N/m right?

but doesn't this number seem large? or is it just me?

No, it is not to large.

and an even more unfortunately pathetic question:

so like this number is like a ratio right so like if i have a different weight or force my k would still be the same right because the ratio between the force and displacement would be the same right? idk help me I am going to fail physics

Yes, it should be the same in ideal case, when the weight is not too large. With heavier load, the rubber band does not behave according to Hook's Law.
http://c21.phas.ubc.ca/sites/default/files/rubber_band_write_up.pdf

 

[Yellowkies_3275]

kg is the unit of mass. The force acting on the object of m=.362 kg is W=mg (N) No, it is not to large.


Yes, it should be the same in ideal case, when the weight is not too large. With heavier load, the rubber band does not behave according to Hook's Law.
http://c21.phas.ubc.ca/sites/default/files/rubber_band_write_up.pdf

thank you so so much :D

 

[ehild]

You are welcome :)