- #1
thename1000
- 18
- 0
Homework Statement
For example:
1.) A spring has natural length 1 m. A force of 24 N stretches it to a length of 1.8 m.
How much work is required to stretch the spring 2 meters beyond its natural length? (ans 60 J)
2.) Suppose that 2J of work is needed to strech a spring from its natural length of 30 cm to a length of 42 cm.
How much work is needed to stretch it from 35 cm to 40 cm.
The Attempt at a Solution
Generally in these problems you solve for K, and then get the integral of kx. how do I set up the limits of these two integrals? In my notes for #2, I have two integrals. the first is used to find K. Is this done always? Is this done for #2? If so what are the limits?
It seems it should be integrating from amount of first strech to total stretch. but I'm not sure.
Any help?
thanks