Physics: Three Ways to Calculate the Work Done by the Normal Force

This is part of my classical mechanics series. You can find all my videos in the series in the following playlist.
• Classical Mechanics 1 F24
What is the work done by friction as a block slides down an incline? In this case, I'm going to calculate this THREE ways. First, by assuming constant forces and paths. Second, creating a line integral. Third - modeling a block on a plane with springs to calculate the vector normal force.
Here is the python code
trinket.io/glo...

[@prof.msc.thiagooliveira1029]

Amazing

[@fizixx]

At 6:35, where you have the integral from x1 to x2 of 0*dx, instead of zero wouldn't it result in: A constant C|[x1, x2] ===> x2 - x1?

[@DotPhysics]

when you take the dot product F*dr, the x component of the force is zero. So you get 0*(x2-x1) = 0

[@fizixx]

@@DotPhysics Ohhhhh....I didn't even pick up on that, thank you.

[@fizixx]

"Cheating" = cleverness 😎