Lecture_Notes_for_Section_4.6

Lecture_Notes_for_Section_4.6 - MOMENT OF A COUPLE Todays...

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MOMENT OF A COUPLE Today’s Objectives : Students will be able to a) define a couple, and, b) determine the moment of a couple. In-Class activities : Check Homework Reading Quiz Applications Moment of a Couple Concept Quiz Group Problem Solving Attention Quiz
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READING QUIZ 1. In statics, a couple is defined as __________ separated by a perpendicular distance. A) two forces in the same direction. B) two forces of equal magnitude. C) two forces of equal magnitude acting in the same direction. D) two forces of equal magnitude acting in opposite directions. 2. The moment of a couple is called a _________ vector. A) free B) spin C) romantic D) sliding
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APPLICATIONS A torque or moment of 12 N · m is required to rotate the wheel. Which one of the two grips of the wheel above will require less force to rotate the wheel?
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APPLICATIONS (continued) The crossbar lug wrench is being used to loosen a lug net. What is the effect of changing dimensions a, b, or c on the force that must be applied?
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MOMENT OF A COUPLE A couple is defined as two parallel forces with the same magnitude but opposite in direction separated by a perpendicular distance d .
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This note was uploaded on 10/04/2010 for the course ME 214 taught by Professor Lipovetsky during the Summer '06 term at Cal Poly Pomona.

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Lecture_Notes_for_Section_4.6 - MOMENT OF A COUPLE Todays...

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