# Dropped object height

Moose720

## Homework Statement

An object with a mass of 6.8kg travels at 29.95 m/s has a force of 203.66N What height would this same object needed to be dropped from in order to acheive the same force?

## Homework Equations

Not sure which formulas to use for this???

## Answers and Replies

F = ma

is it "the same force or same velocity" at he end of the question

Moose720
Same force is what I need.

If same force is needed then it is not possible for any height. At any height earths gravitation will be approx. 9.8 and F = mg and mass will remain constant.

it is definitely same velocity

Moose720
I have a product that needs to pass an impact test of a 6.8kg object traveling at 29.95 m/s. What I am wanting to do it recreate this situation but in a vertical fashion. The weight of the object can vary as long as I end up with the impact force.

this means mass has to be variable how are you planning to vary mass

Moose720
By adding weight to the object being dropped to acheive the desired impact force.

is the velocity 29.95 at the moment of impact

Moose720
Yes, am I missing something?