# A ball with a mass of #80 g# is projected vertically by a spring loaded contraption. The spring in the contraption has a spring constant of #9 (kg)/s^2# and was compressed by #3/5 m# when the ball was released. How high will the ball go?

##### 1 Answer

Jul 2, 2016

#### Answer:

#### Explanation:

Given that the entire spring energy is converted to kinetic energy which later turns to potential energy.

So that means the entire spring energy is turns to potential energy

To solve, we'll use the near-earth potential equation.

Now, spring energy equation is

We have,

So, we end up with

Now, The near-earth potential energy is

So, equating the two, we get

Re-arranging gives us the answer that I have up there. You'll need a calculator to find it in decimals.