Processing Math: Done
13. Moments
From Mechanics
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The resultant moment about <math>O</math> is the sum of the moments about <math>O</math>. | The resultant moment about <math>O</math> is the sum of the moments about <math>O</math>. | ||
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'''[[Example 13.1]]''' | '''[[Example 13.1]]''' | ||
[[Image:ex13.1whole.GIF]] | [[Image:ex13.1whole.GIF]] | ||
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'''[[Example 13.2]]''' | '''[[Example 13.2]]''' |
Revision as of 10:50, 26 June 2010
Theory | Exercises |
Key Points
The moment of a force about the point
Clockwise moments are negative.
Anti-clockwise moments are positive.
The resultant moment about
For the rectangular lamina shown below, find the total moment of the forces acting, about the corner marked O.
Solution
Force | Moment (Nm) |
5N at O | ![]() |
8 N | ![]() |
7 N | ![]() |
6 N | ![]() |
5 N | ![]() |
4 N | ![]() |
Total Moment | |