Physics 112Introduction to Forces - force of gravity. Chapter 3 of digital textbook, chapter 4 of MHR.Notes and worksheet: physics_112_force_gravity_oct_17.pdfPhysics 122Force of tension and hanging signs. Chapter 7.3 of your digital textbook.Notes: physics_122_hanging_signs_oct_17.pdfPages 8 - 12 of your problem set.