On Wednesday, I had five students come to office hours due to the homework being pretty difficult.
The main problem that had questions was finding the acceleration of a cart, a hoop, and a disk rolling down a ramp. This had to be done symbolically with a lot of substitutions from other equations.
Another difficult problem involved a cable holding up a metal beam. The students were required to find the tension in the cable, and the force the hinge was exerting on the metal beam.
On Thursday, a student from a different class needed help involving the tuning of a guitar. You needed to find the diameter of a string that would change the mass per length enough to give the guitar a new frequency.
On Friday, a student came in trying to get a head start on the homework due next week. We talked through the first two problems and came up with solutions for them.
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