Saturday
April 19, 2014

Homework Help: physics

Posted by james on Sunday, April 4, 2010 at 10:55pm.

how do i solve this, i tried dividing the mass by the height, but its wrong
A 407-kg pile driver is raised 15 m above ground.

(a) How much work must be done to raise the pile driver?__kj

(b) How much work does gravity do on the driver as it is raised?__kj

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

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - Hi I really need help with this question... please provide a step by ...
physic - A 2,300-kg pile driver is used to drive a steel I-beam into the ground...
physics - a pile drive has a 413 kg block that is lifted 1.4m and then dropped ...
physical science - If a 500-lb piler driver is raised to a height of 12 feet ...
physics - A mass m = 88.0 kg slides on a frictionless track that has a drop, ...
physics - A pile driver of mass 1000kg,hits a post 3m below it.It moves the post...
physics - The two masses on either side of the pulley, 2.2 kg and 3.6 kg, are ...
Physics - Two balls are connected by a string that stretches over a massless, ...
physics - A painter on a wooden plank drops a 1.50-kg can of paint from a height...
physic - Two balls are conneted by a string that stretches over a massless, ...

Search
Members