if 20a=10b and 30a=20b 0b=?

Question

Its actually a physics questions on how to find the spring if there is no load(20cm=10N,30cm=20N find when there is no load on it)

Answer 1

Justin,

It is better to state the question in terms of Physics itself, otherwise it is not so comprehensible.

A force of 10 N is producing an extension of 10 cm based on data given.

So the original length of the spring is 10cm.

Force (N)               Length(cm)  

0                                10

10                              20

20                              30

Hope this helps,

Pradip