Posted by **MB** on Wednesday, March 2, 2011 at 2:07pm.

Hi I really need help with this question... please provide a step by step explanation with the answer because I need to understand it.

Thanks!

A 406-kg pile driver (the figure below) is raised 12 m above ground.

(a) How much work must be done to raise the pile driver? [Answer in KJ]

(b) How much work does gravity do on the driver as it is raised? [Answer in kJ]

(c) The driver is now dropped. How much work does gravity do on the driver as it falls? [Answer in kJ]

## Answer this Question

## Related Questions

- chemistry - This question I really don't get it. I tried tried tried to figure ...
- algebra 1 - How do you simplify this problem? I really need help.I need it step ...
- Equation from Three Points*HELP* - Write the standard equation for the circle ...
- 061689 bussines accounting and you - All i need detail how to do it i watch ...
- Physics - I really don't get why I am getting this question wrong? Please can ...
- Physics - I really don't get why I am getting this question wrong? Please can ...
- Physics - I really don't get why I am getting this question wrong? Please can ...
- Physics - I really don't get why I am getting this question wrong? Please can ...
- need HELP PHYSICS!! - a) Calculate the P.E. a pile driver has if it is raised 4....
- physics - how do i solve this, i tried dividing the mass by the height, but its ...

More Related Questions