Hi, I try to solve the following problem but my answer does not correspond to the solution of the textbook. Please help me to understand the problem:(adsbygoogle = window.adsbygoogle || []).push({});

The net force acting on a particle depends on the position of the particle along the x-axis according the relation F=F_{0}+C*x, where F_{0}=5N and C=-2N/m. The particle is initially at rest at x=0m when the force begins to act.

a- Calculate the work done by the force when the particle reachesxvalues 1,2,3and 4 m?

b- Determineany positions ( besidesx=0m ) where the work done is zero.

I have problem for the question a.

What I did is to compute F_{1}=F_{0}+C*(1) [forx=1m]

that gives me F_{1}=5-2=3N

So the work for F_{1}is W_{1}= F_{1}*(1)=3J

However the answer in the textbook it4JI dont know how they get that.

Thank you for your time.

B

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# Homework Help: Force problem

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