Lecture_8-Moment_about_axis.ppt

Lecture_8-Moment_about_axis.ppt - Force System Resultants...

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Force System Resultants  Lecture 8-Moment of a Force about a Specified Axis (Section 4.5)
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Learning Objectives Be able to determine moment of a force about a  specified axis using scalar method. Be able to determine moment of a force about a  specified axis using vector method. 
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Pre-requisite Knowledge Units of measurements. Trigonometry concepts. Vector concepts. Rectangular components concepts. Moment concept. Cross product and dot product.
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Moment of a Force about a Specified Axis (scalar formulation) b b d F M = Examples:  Moment about y-axis, M y , has  d y  =  Moment about O-b-axis, M O , has  d b  =  0.3 m  0.5 m  Moment about x-axis, M x , has  d x  =  0.4 m  M y  = 6 N-m  M x  = -8 N-m  M O  = 10 N-m  Where  M b  is the moment of a force F about O-b-axis and  d b  is the  perpendicular or shortest distance from the force to the O-b-axis
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Lecture_8-Moment_about_axis.ppt - Force System Resultants...

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