- #1
CaglarKorkmazgoz
- 4
- 0
- Homework Statement
- Find the stretch of spring (x=L)
- Relevant Equations
- mg=T
mg=mgu+kx
mg=(mg/4)+kx
(3mg/4k)=x=L
Hello, I am new on this forum, so if I make any mistakes please inform me. Thank you.
I wonder why I cannot use forces instead of energy conservation in this question.
The question is:
"How far (x = L) does the spring stretch before the masses stop moving? Express your answer in terms of m, k and some constants as needed."
Here is my attempt but of course it is wrong (I imagined the last situation which is equilibrium), the answer should be (3mg)/2k:
I wonder why I cannot use forces instead of energy conservation in this question.
The question is:
"How far (x = L) does the spring stretch before the masses stop moving? Express your answer in terms of m, k and some constants as needed."
Here is my attempt but of course it is wrong (I imagined the last situation which is equilibrium), the answer should be (3mg)/2k: