Friday
April 18, 2014

Homework Help: Physics

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

First Name:
School Subject:
Answer:

Related Questions

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 ...
physics help please!!! - What is the angular momentum of a 2.5 kg uniform ...
chemistry - This question I really don't get it. I tried tried tried to figure ...
physics - How much force must a weight lifter apply to a 97 kg barbell to ...
algebra 2 - A. I need to write an equation to the linear equation..(-2,-2), (3,3...
Physics - Can someone please show me step by step how to normalize e^-5x in the ...
061689 bussines accounting and you - All i need detail how to do it i watch ...
Physics - A spy satellite is in circular orbit around Earth. It makes one ...
physics - What is the kinetic energy of each electron in a beam of electrons if ...

Search
Members