Statics › Section D · Moments and static equivalence › Topic D.2
Adding moments
Most bodies feel several forces at once, each trying to turn them a different way. Adding their moments with a clear sign convention gives the net turning tendency about a point, the quantity that rigid-body equilibrium will soon require to be zero.
In this topic
- Moments are vectors
- Three sign conventions
- Reading a stated moment
- Magnitude or scalar component?
- Adding moments in a plane
- Worked example: loads on a beam
- The moment centre matters
- Worked example: finding a balancing force
- Adding moments in three dimensions
- Common mistakes to avoid
- Key takeaways
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