Dependence of extention on length

Click For Summary
SUMMARY

The discussion centers on the dependence of extension on length in a vertical spring system with a bead attached. The participant initially attempted to equate the changes in length of the upper and lower parts of the spring using the formula k(change in length) = mg, but this approach was incorrect. The key takeaway is that the spring constant for a partial spring differs from that of the entire spring, which significantly affects the calculations of extension. This distinction is crucial for accurately determining how the distance y that the bead shifts depends on the length l from the upper end.

PREREQUISITES
  • Understanding of Hooke's Law and spring constants
  • Basic knowledge of mechanics and forces
  • Familiarity with the concept of equilibrium in physical systems
  • Ability to apply algebraic manipulation in physics problems
NEXT STEPS
  • Study the principles of Hooke's Law in detail
  • Explore the concept of partial spring constants and their calculations
  • Learn about static equilibrium and its applications in mechanics
  • Investigate the effects of mass distribution on spring extension
USEFUL FOR

Physics students, mechanical engineers, and anyone interested in the mechanics of springs and forces in static systems.

Brilli
Messages
48
Reaction score
0

Homework Statement


A light uniform spring is tied between the ceiling and the floor keeping the spring vertical as shown in the figure. A bead of finite mass is glued at a distance l from the upper end and then allowed to go slowly down. The bead shifts a distance y.How does the y depend on l?

The Attempt at a Solution

I put that k(change in length of the spring upper part) +k ( change in legth of the lower part)=mg
And that both changes are same thus the changes in legth =(mgk)/2. But the answer says its wrong.
[/B]
 
Physics news on Phys.org
The spring constant of a partial spring is not the same as the spring constant of the full spring.
 
Orodruin said:
The spring constant of a partial spring is not the same as the spring constant of the full spring.
Thanks you so much!
 

Similar threads

  • · Replies 10 ·
Replies
10
Views
1K
Replies
3
Views
2K
  • · Replies 7 ·
Replies
7
Views
4K
  • · Replies 14 ·
Replies
14
Views
2K
Replies
6
Views
2K
  • · Replies 18 ·
Replies
18
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 9 ·
Replies
9
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K