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Farcher
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I was following this lecture on Newtons Laws.

https://youtu.be/2tHpgQmnH3A?si=Wbp36oBS_4b1HhIi

At 31:56 in the video, the board has a very general solution to Newton's second law. However the second component of the RHS of the final equation is a double integral, something I'm having a tough time grokking.

enter image description here

Why do the two integrals have different ranges? Aren't they being integrated over the same time period, lets say 0 to t, so why does the inner intergal have zero to t`?

I was following this lecture on Newtons Laws.

https://youtu.be/2tHpgQmnH3A?si=Wbp36oBS_4b1HhIi

At 31:56 in the video, the board has a very general solution to Newton's second law. However the second component of the RHS of the final equation is a double integral, something I'm having a tough time grokking.

Why do the two integrals have different ranges? Aren't they being integrated over the same time period, lets say 0 to t, so why does the inner intergal have zero to t`?

I was following this lecture on Newtons Laws.

https://youtu.be/2tHpgQmnH3A?si=Wbp36oBS_4b1HhIi

At 31:56 in the video, the board has a very general solution to Newton's second law. However the second component of the RHS of the final equation is a double integral, something I'm having a tough time grokking.

enter image description here

Why do the two integrals have different ranges? Aren't they being integrated over the same time period, lets say 0 to t, so why does the inner intergal have zero to t`?

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Qmechanic
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Understanding the double integral solution to Newtons second law?

I was following this lecture on Newtons Laws.

https://youtu.be/2tHpgQmnH3A?si=Wbp36oBS_4b1HhIi

At 31:56 in the video, the board has a very general solution to Newton's second law. However the second component of the RHS of the final equation is a double integral, something I'm having a tough time grokking.

Why do the two integrals have different ranges? Aren't they being integrated over the same time period, lets say 0 to t, so why does the inner intergal have zero to t`?