(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 2.0 kg block is placed on top of a spring which is compressed 0.5 m. The spring constant of the spring is 2.50 N/cm. when the block is released, find (a) the velocity at which the block leaves the spring (b) the velocity of the block when it has risen 1.00 m (c) the maximum height that the block can reach.

2. Relevant equations

3. The attempt at a solution

a) I tried using the formula W = ΔKE + ΔPE + ΔPEe

since there's no other work done W = 0. I canceled ΔKE because there's no motion in the object at the beggining and at the highest point. then I canceled PE1 because there's no height yet then I canceled PEe2 because it not in contact with the spring anymore. then my formula looked like this:

PEe2 = PE1 -----> ½kx² = mgh

how can i find the initial Velocity with the formula I got? pls tell me I did something wrong or if I forgot any thing.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Spring energy

**Physics Forums | Science Articles, Homework Help, Discussion**