Assignment 20 

Study of vectors is extended, and vector methods are applied to object moving on inclines and objects held stationary by a variety of forces.  The lab exercise investigates the forces and torques that hold an extended object in equilibrium.

The Introductory Problem Set extends the analysis of vectors.

qa problems analyze forces on objects moving along inclines under the influence of gravity, normal forces, friction and masses suspended over pulleys

The 'seed' problem considers forces holding an extended object (in this case a metal strap) in equilibrium, and the effect of suddenly removing one of those forces.

The lab exercise investigates the forces holding an extended object in equilibrium, and the extent to which the conditions of equilibrium are verified.

Text topics continue the topics of impulse-momentum and conservation of momentum.