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I don't usually ask questions here, but I've been stuck for a v-e-r-y long time on this problem.

It goes like this:

A ball is dropped 1 meter above a tray connected to a spring. This is what it looks like:

O

|____|

><

<>

><

<>

Mass of ball - 1kg

Mass of tray - 5kg

Spring - K = 100 N/m

If the collision between the ball and the tray is totally elastic, what is the maximum compression of the spring?

The velocity of the ball when it hits the tray is 4.47 m/s.

The probable equation would be something like this:

Up+Ek+Ee=Up+Ek+Ee

I just don't know what to put in.

I would really appreciate any help.

Thanks, Gothican

Edit: I'm using g=10

It goes like this:

A ball is dropped 1 meter above a tray connected to a spring. This is what it looks like:

O

|____|

><

<>

><

<>

Mass of ball - 1kg

Mass of tray - 5kg

Spring - K = 100 N/m

If the collision between the ball and the tray is totally elastic, what is the maximum compression of the spring?

## Homework Equations

The velocity of the ball when it hits the tray is 4.47 m/s.

The probable equation would be something like this:

Up+Ek+Ee=Up+Ek+Ee

I just don't know what to put in.

I would really appreciate any help.

Thanks, Gothican

Edit: I'm using g=10

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