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Exam 2 Learning Objectives

# Exam 2 Learning Objectives - ME 270 LEARNING OBJECTIVES OF...

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ME 270 LEARNING OBJECTIVES OF EXAM 2 Topic Area 1: Frames and Machines 1. Free body diagrams (overall and individual members) 2. Newton’s Third Law 3. Zero-force members Note : Make a plan before starting to solve Negative solutions imply that the direction of the force is opposite to that chosen on the FBD. Leave FBDs intact and carry negative signs throughout calculations Be able to express solutions in vector form Topic Area 2: Friction 1. General friction problems 2. Tipping vs. slipping 3. Wedges 4. Belt friction Note : For general friction problems - identify all potential types of impending motion and associated assumptions - know direction of impending sliding before drawing friction force - f f N max s = = μ for impending motion only

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For tipping/slipping problems - Carefully read question to determine the direction of impending slipping and/or impending tipping - Make assumption of slipping or tipping - Solve - Check assumption - Rework if assumption is incorrect For wedge problems -
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