ch4_6_student_notesF2010

ch4_6_student_notesF2010 - MOMENT OF A COUPLE(Section 4.6...

Info icon This preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
MOMENT OF A COUPLE (Section 4.6) Today’s Objectives : a) define a couple, and, b) determine the moment of a couple. In-Class activities : Applications Moment of a Couple Problems Questions
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
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?
Image of page 2
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?
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
MOMENT OF A COUPLE (Section 4.6) A couple is defined as two parallel forces with the same magnitude but opposite in direction separated by a perpendicular distance d. The moment of a couple is defined as M O = F d (using a scalar analysis) or as M O = r × F (using a vector analysis). Here r is any position vector from the line of action of –F to the line of action of F .
Image of page 4
MOMENT OF A COUPLE (continued) The net external effect of a couple is that the net force equals zero and the
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern