Postcard Professor aims to take complex ideas and boil them down to the size of a postcard. Typically, this means a video clip with about 10-12 minutes of explanation and writing. The end product can be used as a reference sheet for homework problems.
I'm a professor at Abilene Christian University, and a strong believer that examples and lectures are more useful in video format, so that students can pause, think, rewind, and watch again. I'm making these for the classes I'm teaching, but I hope that they'll be useful to engineers around the world.
for the beam element, shouldn't the derivative of phi have (12*x)/L^3 for V_1 and same for V_2? this would change the values when evaluating the derivate at x=L
Please explain if possible, the middle support (PIN) should have a resultant moment, isn't it? Because intuitively, P is pushing down, the PIN won't settle and the wall won't let move up either. So, there should be a bending effect on the PIN.
Best video I've seen on this subject BY FAR. 've been stuck on a problem for 3 days and this has really helped. Now I just need to get my head around how to do this with 6 degrees of freedom and I should be able to move on with my project! Thanks!
