## Success in the portion of our class covering an Introduction to Newton's Laws of Motion is determined by your being able to accomplish the tasks listed below. The major objectives are listed by number. The list under each major objective includes both subtopics of that objective (usually topics which are required for a complete understanding of that major objective) and also the multiple representations of the task in which you are expected to be proficient. 1. Understand and apply Newton's Third Law. Recognize when equal and opposite forces are, and are not, Third-Law partners. Identify the Third-Law partners in any system of particles. 2. Understand and apply Newton's Second Law in situations of forces which are constant over time Newton's First Law Limits of applicability (inertial frames of reference) Understand the nature of contact forces between unattached surfaces (both normal and frictional components) Understand the nature of pulling forces at points of attachment for strings, rods, chains, etc. (tension forces) Apply knowledge of kinematics to the acceleration side of the Second Law. Apply knowledge of vector addition to the sum-of-forces side of the Second Law. Free-body diagrams and extended free-body diagrams Rotating coordinate systems for convenience Motion on slopes Pulleys (frictionless and massless so far) Working outside of accelerated frames of reference (e.g. accelerated elevator cars in two dimensions) Systems of objects (each treated as a particle) moving as a unit in some manner (moving as a unit only at this point) Test 1 material ends here 3. Apply the Second Law to cases for which the coefficients of friction between various pairs of surfaces are known or can be determined. Understand the definitions of coefficients of friction, and the experiments from which those coefficients are determined All the subtopics of item 2 also apply here Systems of objects (each treated as a particle) either moving as a unit in some manner, or not (i.e. slipping). 4. When forces are changing with time, apply Newton's Second Law at particular instants of time when either some forces and/or the acceleration is knowable. Horizontal circular motion Vertical circular motion All the subtopics of items 2 and 3 also apply here