Physics
posted by MB .
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 406kg 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]

hhhhhhhhhhhhhhhhhhvvhhhhhhkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
Respond to this Question
Similar Questions

algebra 1
How do you simplify this problem? I really need help.I need it step by step so I could understand it.Please help.Thanks. b[x+4a+(x7)] 
physics
how do i solve this, i tried dividing the mass by the height, but its wrong A 407kg pile driver is raised 15 m above ground. (a) How much work must be done to raise the pile driver? 
Physics
A spy satellite is in circular orbit around Earth. It makes one revolution in 6.00 hours. (a) How high above Earth's surface is the satellite? 
Equation from Three Points*HELP*
Write the standard equation for the circle that passes through the points: (0, 0) (6, 0) (0,  8) You must include the appropriate sign (+ or ) in your answer. Do not use spaces in your answer. x 2 + y 2 x y = 0 HELP PLEASE I NEED … 
chemistry
This question I really don't get it. I tried tried tried to figure out how to start solve the problem but still couldn't figure out. So can you help me with one question PLEASE? 
061689 bussines accounting and you
All i need detail how to do it i watch video but im not understanding if anybody have more specific explanation details Please help step by step what i need to do im so confused Thank you :))) 
need HELP PHYSICS!!
a) Calculate the P.E. a pile driver has if it is raised 4.5 meters by a mechanical winch. If the 510 kilogram pile driver is allowed to fall freely, what would its velocity be at ground level. b) A 4.2 kg mortar shell is fired out … 
Geometry
You want to draw an enlargement of a design that is painted on a 4 in. by 5 in. You will be drawing this design on a piece of paper that is 8 1/2 in. by 11 in. What are the dimensions of the largest complete enlargement you can make? 
algebra
Hi I need help with this question. I am not asking for the answer because if not I wont learn like that. I am looking for a good step by step explanation. Thank you. Solve for x: 5x + 2 = 4x − 9. 
Math
I need help solving the problem not the answer. (Multiple Choice) The steps below show the incomplete solution to find the value of x for the equation 7x + 8 − 3x = −6 + 10: Step 1: 7x + 8 − 3x = −6 + 10 Step 2: 7x + 8 − …