Height Above Water

  • Thread starter ~Sam~
  • Start date
  • #1
80
0

Homework Statement



79kg person jumps from a platform that is 100m above the water. He is attached by a bungee chord with sprint constant 40 N/m and length 35 m. Now he jumps off. How far is he above the water now when the chord has reached maximum elongation

Homework Equations




F=ma, Ek= 1/2mv2 Ep=mgh...etc

The Attempt at a Solution



I'm kind of stuck.. I know it involves energy, but the maximum elongation of the chord confuses me.
 

Answers and Replies

  • #2
Pengwuino
Gold Member
5,009
16
All that it means is that the person is no longer falling and is just about to begin moving upward. In other words, the bunjee jumpers gravitational potential energy has been fully converted into the spring potential energy.
 

Related Threads on Height Above Water

  • Last Post
Replies
4
Views
4K
Replies
1
Views
2K
Replies
3
Views
1K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
1
Views
722
  • Last Post
Replies
9
Views
7K
  • Last Post
Replies
2
Views
692
Replies
7
Views
3K
Replies
28
Views
8K
  • Last Post
Replies
2
Views
4K
Top