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HI guys,

Im having some trouble with a dynamics question, I am only looking at a worked example however I can't see where the final answer comes from.

The problem is sample 3/5 on http://www.eng.auburn.edu/~marghitu/MECH2110/Dynamics/D2_1_examples.pdf [Broken]

I follow the working until the line after "which becomes" I cannot see why the integral becomes

F/k [sin(kt)+Uk(cos kt - 1)] - mgt = mv

rather than:

F/k [sin(kt)+Uk(cos kt)] - mgt = mv

Its probably just something small but I can't figure it out,

Can anybody help me out?

Thanks!

Im having some trouble with a dynamics question, I am only looking at a worked example however I can't see where the final answer comes from.

The problem is sample 3/5 on http://www.eng.auburn.edu/~marghitu/MECH2110/Dynamics/D2_1_examples.pdf [Broken]

I follow the working until the line after "which becomes" I cannot see why the integral becomes

F/k [sin(kt)+Uk(cos kt - 1)] - mgt = mv

rather than:

F/k [sin(kt)+Uk(cos kt)] - mgt = mv

Its probably just something small but I can't figure it out,

Can anybody help me out?

Thanks!

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