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Ebarval
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- When do surface terms go to zero?
Hi all,
I'm trying to understand when surface terms go to zero. I'm not really getting a connection other than many textbooks just saying surface terms go to zero.
I have added a photo of Liboff's Kinetic Theory page 3 on Lagrange's equations. Before equation 1.7, he says the surface terms go to zero because the end points 1 &2 are fixed. But can't the Lagrangian still have a differential with respect to qdot?
I'm trying to understand when surface terms go to zero. I'm not really getting a connection other than many textbooks just saying surface terms go to zero.
I have added a photo of Liboff's Kinetic Theory page 3 on Lagrange's equations. Before equation 1.7, he says the surface terms go to zero because the end points 1 &2 are fixed. But can't the Lagrangian still have a differential with respect to qdot?