Transcript Lecture 27 sect 7.4.ppt

ME 221 Statics
Lecture #27
Section 7.4
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Homework #10
Chapter 7 problems:
– 2, 5, 6, 8, 19, 21, 24, 26 & 35
• Due Friday, November 7
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Quiz #6
Wednesday, November 5
Shear & moment problem
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Last Lecture:
Calculating Shear Forces &
Bending Moments
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Sign Convention
M
M
V
V
Positive Shear and Positive Moment
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Effect of External Forces
Positive Shear
M
M
Positive Moment
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Shear Forces
• Area under load curve
x
V ( x)   w(u )du
0
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Bending Moments
• Area under shear force curve
x
M ( x)   ( x  u ) w(u )du
0
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Example Problems
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