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Opposite Direction/Opposing Forces

by CountFleet
Tags: forces, opposite
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CountFleet
#1
Aug8-10, 08:32 PM
P: 8
Is it possible for two objects to travel in opposite directions with out any work if they have opposing forces? I attached a diagram to show what I am trying to say. The boxes in the diagram are moving from position 1 to position 2.
Attached Files
File Type: pdf diagram.pdf (16.2 KB, 16 views)
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zhermes
#2
Aug9-10, 12:10 AM
P: 1,261
Diagram doesn't help much.
Anytime there is force on a body that is moving, there is work.
CountFleet
#3
Aug9-10, 10:21 AM
P: 8
This might be a better way to ask.

Is it possible for the two objects to use each others opposing forces to travel with out any work(other than friction)?

zhermes
#4
Aug9-10, 02:14 PM
P: 1,261
Opposite Direction/Opposing Forces

I still have basically no idea what you're talking about, except that it seems to be a free-energy something or other. I'm pretty sure the answer is no.
Skrambles
#5
Aug9-10, 08:38 PM
P: 105
Work is a scalar, not a vector. Since the forces are opposing the direction of motion, they are both doing negative work. Both closed systems would be losing energy.

http://en.wikipedia.org/wiki/Conservative_force


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