- #1

- 581

- 20

## Homework Statement

## Homework Equations

f = Spring's constant * ##\Delta x##

Potential Energy = ##\frac{1}{2} kx^2##

## The Attempt at a Solution

I try to find constant of the springs

Fabove + Fbelow - W = 0

k*(0,2 m) + k*(0,2m) - ##\frac{1}{2}## * 9,8 = 0

0,4k = 4,9

k = 12,25 N/m

can I use Conservation energy to find v when small object is on the bottom, like this?

Ep when rest + Ek when rest = Ep bottom + Ek bottom

##\frac{1}{2} k x^2## + 0 = 0 + ##\frac{1}{2} m v^2##

##\frac{1}{2} *12,25 * {0,3}^2## = ##\frac{1}{2} \frac{1}{2} v^2##

v^2 = 12,25 * 0,09 * 2

I am not sure what to do next. Can you help me?