# Translational/gravitational/elastic/total energy problem

1. Dec 16, 2003

### Rival

A 1.80 kg object is hanging from the end of a vertical spring. The spring constant is 34.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the table below by calculating the translational kinetic energy, the gravitational potential energy, the elastic potential energy, and the total mechanical energy E for each of the vertical positions indicated. The vertical positions h indicate distances above the point of release, where h = 0.

h(m) KE(J) PE-gravity(J) PE-elastic(J) E(J)
0
0.200
0.400

that is supposed to be a table where h is given and you have to find everything else...

i can figure out Pe-gravity by mgh but i cannot get the PE-elastic.

if i get PE-elastic i can solve for the rest

Kevin

2. Dec 16, 2003

### himanshu121

PE elastic is the energy stored in the spring it $$\frac{kx^2}{2}$$

Where x is the elongation from normal situation