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I thought to use the equation 1/2mv + 1/2kx = 1/2mv + 1/2kx

But having the friction with the barrel, I got lost, and have no idea where to go from there. Or actually where to start.

- Thread starter jq.barista
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- #1

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I thought to use the equation 1/2mv + 1/2kx = 1/2mv + 1/2kx

But having the friction with the barrel, I got lost, and have no idea where to go from there. Or actually where to start.

- #2

PhanthomJay

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Please note that KE is 1/2 mv^2 and PE_spring = 1/2 kx^2. Also you should be familiar with the conservation of total energy equation when non-conservative forces are involved, you know, W_nc = delta KE + delta PE?

I thought to use the equation 1/2mv + 1/2kx = 1/2mv + 1/2kx

But having the friction with the barrel, I got lost, and have no idea where to go from there. Or actually where to start.

Welcome to PF! Please now give it a try.

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