The Leaning Ladder Problem | Physics with Professor Matt Anderson | M12-22

Another classic physics problem. You lean a ladder against the wall and start climbing up. At what point does the ladder slip and you fall to your death? And why do physics problems always seem so morbid? Hmmm...

Physics with Professor Matt Anderson

[manuboker]

Excellent good vibes physics lectures!! Making it easy to comprehend.

[brunogreco]

Hello. I have a question regarding the normal force. If the reference frame (0, 0) is place at the bottom of the beam and positive to the left and positive up in the y direction. Does the normal force is split in two components with respect the angle horizontal to the x axis.

[honestvalley]

Prof. Anderson,
Again you’ve skillfully given a marvelous in-depth overview of a real life deal. To me it’s like you’ve created with remarkable quality a standard many can use to analyze other ladder presentations found on Youtube. Your’s is clearly a basic framework to use to evaluate his or hers’ choice of numbers. 
Thank you also for your written reply following my comment on the video ‘Free Body Diagram, Sine-Cosine Components, June 24, 2014. I just saw it last week.
A process to set up would be to really take the limit of theta —-> 0 for a different scenario. I’d like to see how weight becomes redistributed in a perfectly straight vertical beam with; for example, cross sectional area 1CM^2 X 1.23 M (length). If for some grainy reason my solid becomes just a whee bit bent on one side all of the weight in the portion above the bend is no longer directed down through the neutral axis below the bend; ultimately it is but would be I’d imagine indirectly. I’m not able to picture exactly how though. Seems to me by taking the limit I could accurately determine perhaps two facts. One where the new centroid exists in the upper member. Two, what the magnitude of mg would be hanging from there. Please prompt me to view one of your other videos and/or a strategy.
Clancy

[nadiamirjan]

Why do we not have a gravitational force (Fg) for the part of the ladder that is touching the floor?