Forces-Work

From: JamesLan (jlan1234_at_hotmail-dot-com.no-spam.invalid)
Date: 03/22/05 

Date: 22 Mar 2005 01:34:33 -0600

Hi everybody!

Just wondering if you could help me out here:

An object is attracted toward the origin with a force F_x = -k/x^2.

1. Calculate the work done by F_x when moving the object in the x
direction from a to b. (I have already done this part by integrating
F_x with respect to x and got the answer k*(1/b - 1/a))

2.The only other force acting on the object is a force that you exert
with your hand to move the object slowly from a to b. How much work
do you do? (This is the part i have no clue about)

Thanks in advanced for the help

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