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Hey everyone, I'm stuck on one of my homework questions. It reads:

An object is attracted toward the origin with a force given by Fx = -k/(x^2). (Gravitational and electrical forces have this distance dependence.).

I have to calculate the work done by the force when the object moves in the x direction from x1 to x2. I tried to do so and got the answer W = (-k/(x^2))*(x2-x1) but apparantly the answer doesn't depend on the variable x so I'm really stuck.

The 2nd part of the question reads "The only other force acting on the object is a force that you exert with your hand to move the object slowly from x1 to x2. How much work do you do?". I'm also really stuck on this, I don't even know how to approach it.

I tried to ask some of my friends but they were at a loss as to what to do so I though i'd give this a shot :)

An object is attracted toward the origin with a force given by Fx = -k/(x^2). (Gravitational and electrical forces have this distance dependence.).

I have to calculate the work done by the force when the object moves in the x direction from x1 to x2. I tried to do so and got the answer W = (-k/(x^2))*(x2-x1) but apparantly the answer doesn't depend on the variable x so I'm really stuck.

The 2nd part of the question reads "The only other force acting on the object is a force that you exert with your hand to move the object slowly from x1 to x2. How much work do you do?". I'm also really stuck on this, I don't even know how to approach it.

I tried to ask some of my friends but they were at a loss as to what to do so I though i'd give this a shot :)

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