Here is the question. I missed this day in class, so now I'm totally lost. Once I figure out how to get it set up, plugging things in and such won't be a problem I don't think.
Two boxes are stacked on top of each other, each box has a mass of 15 kg. You are pushing on the bottom box with a force of 50 N. What is the acceleration of each box if the static and kinematic coefficient of friction between the box and floor is (i'm not sure how to make the right symbols work, but the letters after the u, which would be a mu, are subscripts) us = 0.45 and uk = 0.25 respectively?
Help setting it up would be most appreciated.
2. But suppose you did have the friction information.
Case1: No box-box slip = treat the stack as a single block of mass 30kg.
Case2: Box-box slipping:
You know the frictional force at the box-box contact so:
horizontal force on lower box = applied force - box floor friction - box box friction.
horizontal force on upper box = box box friction
The box floor friction uses a mass of 30kg the box box friction uses a mass