Question

If an elevator with mass M falls down a shaft onto a spring, from height h, find value of spring constant k so that max acceleration on elevator is no more than 5 g

Answer 1

Ive gotten pretty far and have thesolution but theres one part I just dont understand...

Answer 2

what is the formula to find the constant k?

Answer 3

tell me what you know

Answer 4

1/2mv^2 sub 1 +mgysub1 +1/2kx^2 sub1= 1/2mv^2 sub 2 + mgysub2 + 1/2kx^2 sub 2

Answer 5

let me write this down on paper

Answer 6

intial velocity mv^2 sub 1 equals 0, 1/2kx^2 sub 1 equals 0, mv^2 sub 2 equals zero and mg y sub 2 equals zero