While I admitted I was in error to the others.
You sir, can go pi$$ up a rope.
;)
LOL!
Just pointing out the number 1 sanity check. If you stop and think about the implications of your solution then you can often spot major errors. I had a college prof one time that did not do that. We pointed out that her answer to the test problem would be a perpetual motion machine and OUR answer had balanced forces. That prof was gone not back the next year.