# Force cal.

1. Oct 12, 2005

### Don Crowe

It has been too long for me to remember.
I have a .5011 KG weight 6.25 in. above an object in open air. If allowed to free fall and hit the object, what force will it hit the object with?
Thanks,
Don Crowe

2. Oct 12, 2005

### Staff: Mentor

While it's easy to calculate the speed at which the weight will strike the object (use $1/2 m v^2 = m g \Delta h$), there's not enough information to calculate the average force generated during the strike. That depends on the time it takes for the weight to be stopped, which depends, among other things, on the nature of the materials.

3. Oct 12, 2005

### Don Crowe

applied force

Thank you for your responce. The material is tool steel and in the form of a 2.0 in. diameter cylinder, 1.5 in. long.