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Physics 12 Dynamics (Assignment #2) 1. Define the terms and answer the following questions; use the term vector and scalar in your definitions. Also include a mathematical definition of the vector and scalar quantities discussed. You may use your text (pg. 77 -91 in Giancoli, 5th Ed): Net Force Normal Force Acceleration Free Body Diagram Newton’s First Law Newton’s Second Law Newton’s Third Law Inertia 2. Look on pg. 87. What is another term for Normal force? 3. Draw Fig. 4-19 (pg. 90); Use the Example (4-7) to solve the problem. Be sure to label your diagram with the variables AND values of the components. 4. Draw a free body diagram (force diagram) showing the forces on a hockey puck sliding on frictionless ice. Check your answer on pg. 91. Summarize the “Problem Solving” method for free body diagrams on page 91 in your notes. 5. Complete example 4-9 (Normal force discussion), 4-10 (tension problem), 4-11 (pulleys), 4-12 (two tension forces), 4-13 (components), 4-14 (friction), 4-15 (conceptual friction question), 4-16 (pulley and tension), 4-17 and 4-18 (friction). In each problem, summarize the problem with a diagram and a VERY short written question (point form), then solve paying close attention to free body diagrams and equation set-up. 6. Do the following problems from the text pg. 104 - 111: Choose 40 problems; do problems with increasing difficulty (do III – level questions last). Also do 8 problems from 110 – 111. You have been assigned 48 problems plus examples which are meant to help you to do the problems assigned. DO NOT leave these until the end of the unit; DO NOT rely on your classmates to complete them for you. You will be checked each day on your progress and you will be kept in outside of class time to finish if you do not keep up! You will be given some class time, however, it is expected that you will do most of this at home. It is a LOT of work, but if you work consistently, you should be able to get it done in about 4 - 5 days in plenty of time to study for the unit test which will happen approximately 1 ½ weeks from the beginning of the unit. RFurse Page 1 2/21/2005